When a dog has been seen at two clinics and an emergency hospital, and one of those clinics has since closed, the new veterinarian often asks for the prior imaging and laboratory reports before planning the next workup. Owners then find that one facility has closed and another has sent an invoice. The records are several documents. The written record, the images, the laboratory reports, and any rabies or health certificate each have their own release path, and the path depends on the jurisdiction.

This guide is for companion-animal records. Herd and flock rules are different and are outside it. It explains what to ask each facility for, how California statute and Ontario's professional standard describe ownership and timing, and how to look for a record after a practice closes. It is a records checklist, not legal advice. The receiving veterinarian decides what to repeat, re-image, or treat.

What you are entitled to ask for, and what the practice keeps

The useful split is between the record and the information in it. Under the Principles of Veterinary Medical Ethics of the AVMA, medical records are the property of the practice and the practice owner. The practice keeps the original for the period the law requires. The information is confidential and is released when the law requires or allows it, or when the client consents. The same principles obligate a veterinarian to provide copies or summaries when the client requests them. They set no deadline, file format, or fee. Unless a state adopts them into its practice act, they are ethics, not a statute.

Veterinary records are not governed by HIPAA. The Health Insurance Portability and Accountability Act applies to human health information. A 2019 review in the Journal of the American Veterinary Medical Association describes veterinary confidentiality as a matter of state practice acts, with no national standard, and it says the AVMA principles do not have the force of law unless a state incorporates them. That review uses selected states, not a current survey of every practice act. It describes California as strict, Indiana as a middle path, and Massachusetts as minimal: Massachusetts appeared not to regulate disclosure directly, while still requiring a veterinarian to provide an animal's records to the owner or to another veterinarian on request. A clinic in another state has to be asked which rule applies there.

Because the practice keeps the original, the request is for a copy or a summary, not for the paper folder or the server. When a client seeks care from a different veterinarian without a referral, AVMA ethics say a new veterinarian-client-patient relationship is established and, with the client's consent, the veterinarian who had been treating the animal should provide the medical record to the new attending veterinarian. In a referral, the referring veterinarian should send the information pertinent to the case before or at the first contact, and the receiving veterinarian should report findings back.

flowchart TD
  client["Client asks each facility and authorizes release"]
  written["Written record: California copy within five days; Ontario complete copy expected in two business days"]
  images["California radiographs: release to the next veterinarian, then return, except emergency-hospital films"]
  labs["California laboratory data: a copy to the client on request"]
  closed["Closed practice: California address of record, or Ontario storage for up to two years"]
  recv["Receiving veterinarian decides what to repeat"]
  client --> written
  client --> images
  client --> labs
  client --> closed
  written --> recv
  images --> recv
  labs --> recv
  closed --> recv

Ask for a full copy, not only a summary

A request that says "the records" often comes back as a short summary or as the invoice. In California, the written record and the summary are defined separately, and the summary is narrower.

The board's minimum-standards document, 16 California Code of Regulations section 2032.3, lists what the written record contains. That includes the responsible veterinarian, the client, the animal's identity, age, sex, breed, species, and color, the history, physical-examination data, the treatment plan with medications, dosages, and frequency, a surgical description with the surgeon and the sedative or anesthetic agents, the diagnosis or tentative diagnosis, the prognosis when it is relevant, every medication prescribed or dispensed with strength, dosage, quantity, and frequency, and the daily progress and disposition of the case.

The same section says a summary shall be made available to the client on request, and it lists the summary's minimum content: client and animal identity, age, sex, breed, species, and color, history, physical-examination data, the treatment plan with dosage and frequency, dispensed medications with strength, dosage, quantity, and frequency, and daily progress and disposition. The summary list does not include the surgical description, the anesthetic agents, the diagnosis, the prognosis, the radiographs, or the laboratory copy. Those last two have their own subsections. A California summary can therefore still omit the operative note and the actual images and lab reports.

The clock for a copy comes from Business and Professions Code section 4855, amended by Statutes of 2025, chapter 195 (AB 1502), effective January 1, 2026. A veterinarian must keep a written record and provide a copy of that record to the client or the client's authorized agent within five days of a verbal or written request. The California Veterinary Medical Board consumer FAQ still describes section 4855 as a duty to provide a summary within a reasonable time, and it still says a duplication cost may apply. Use the statute for the five-day copy. Use the FAQ for the closed-practice address and the complaint route, and read its summary language as guidance that has not caught up with the amendment.

Ontario is a professional standard, not a California rule. The College of Veterinarians of Ontario guide to the medical-records standard requires a veterinarian to provide a copy of the requested components, including a complete copy, and expects that complete-copy request to be finished within two business days. In an emergency, relevant information may be given verbally first, with the copy to follow. When the copy is electronic, the audit trail must be accessible and capable of being printed. The practice keeps the original.

Radiographs follow different rules than the written record

California's property, release, and return rules in section 2032.3 are written for radiographs. They are not a general statute for ultrasound or CT. Those studies should still be requested as complete DICOM sets, using the imaging definitions below, without treating the radiograph-ownership rule as if it covered every modality.

Under section 2032.3(c)(1), radiographs are the property of the veterinary facility that ordered them. They are released to another veterinarian when that veterinarian requests them and has the client's authorization. They are returned to the originating facility within a reasonable time on request, and the transfer is documented in the medical record. Exposed radiographic films, except intraoral films, need a permanent identification legibly exposed in the film emulsion: the facility or veterinarian name, the client, the patient, and the date. The identification rule applies to those films.

Radiographs that originate at an emergency hospital become the property of the next attending veterinary facility upon receipt. The ownership change is in section 2032.3(c)(1). Subsection (e) is the separate discharge copy after emergency service. Because those emergency-hospital radiographs change owners on receipt, the return-to-origin rule for other radiographs does not describe them. Ask the next clinic whether those films are already in its record before requesting them again from the emergency hospital.

The ACVR Digital Imaging Standards Committee recommendations are professional guidelines, not a regulation, and a given practice may not be able to export every study in the ideal structure. They define a radiographic DICOM study as the group of images of the same region from that examination, for example a three-view thorax, with each image as its own series. For ultrasound, still images belong in one series and each cineloop is its own series. The committee sets 2.5 line pairs per millimeter as the minimum spatial resolution in a clinical setting, and it applies that minimum to secondary capture such as a digital camera or a laser scanner.

Ask for that complete study. A photo of a monitor drops the series structure, and the 2.5 line-pair minimum applies to camera capture as well. Adding images to a closed study, one already sent to the archive or for review, is discouraged because the added images can contain findings that compromise a report already written. The ACVR and ECVDI consensus statement on imaging report foundations says a report should carry enough technical information for another radiologist to judge the interpretation and potentially repeat the study, and that the report should state how many images were assessed, because images can be added to an archive independently of report verification. Clinics that already route studies through a PACS workflow or a teleradiology submission workflow may be able to export the study. Those guides describe in-clinic routing. They are not the client's release right. Ontario allows a digital photo of a film radiograph when the copy preserves image quality and cannot be altered. That photo is still not a DICOM study.

Lab reports: request the reports, not the conclusions

A sentence that says the blood work was normal, or a single line that says the CBC and chemistry were within limits, drops the numbers, the units, the reference intervals, and any note about the sample. The next veterinarian then has to decide whether to redraw.

In California, section 2032.3(d) says laboratory data is the property of the facility that ordered it, and a copy shall be released on the client's request. That subsection does not attach the five-day clock. The five-day duty in section 4855 is for the written record. Ask for the report itself: values, units, reference intervals, and any comment on hemolysis, lipemia, icterus, or how the sample was handled.

Cornell's eClinPath interference guide and its artifact guide describe sample effects that are independent of the animal's disease and that depend on species, method, and how severe the interference is. They are teaching references, not a reading of one patient's result. The patterns below are why the report has to travel with the number.

• Hemolysis. In the blood count it lowers hematocrit, packed cell volume, and red-cell count, and it raises MCH and MCHC. Potassium rises in horses, some breeds of cattle, sheep, some breeds of dogs, pigs, and camelids. It does not rise in every dog. Depending on species and method, hemolysis can also raise AST, LDH, magnesium, and CK. eClinPath treats hemolysis as the most common interference, and it can come from the draw, from freezing, from delay, or from disease.

• Lipemia. It raises hemoglobin, MCH, MCHC, and refractometer total protein, and it lowers sodium and chloride. Other chemistry changes depend on the method. eClinPath ties lipemia to a non-fasted sample or to disease-related lipid, such as pancreatitis in dogs.

• Icterus. Effects depend on the method. The interference page says icterus can falsely decrease creatinine and total protein. The artifacts table also lists decreases in creatinine, cholesterol, and GGT. A low creatinine on an icteric report is not a kidney-stage result. The report needs to show that the sample was icteric.

• Tube fill and delayed separation. Too little blood in a liquid EDTA tube lowers MCV and hematocrit and raises MCHC, so the indices can look microcytic because of the tube. If serum or plasma is left on the cells, glucose falls, and potassium, phosphate, and magnesium can rise. eClinPath points that potassium leak to the same species pattern as hemolysis, and it says to separate the cells and submit the sample promptly. The receiving veterinarian decides whether to repeat a stored glucose or potassium result.

A useful transferred report shows the values, the units, the reference intervals for that method, and any note that the sample was hemolyzed, lipemic, or icteric. The receiving clinic interprets those numbers against the animal it is examining. This guide does not read a past result as today's diagnosis.

Rabies and health certificates are easy to miss

Owners often expect a chart export to include every paper the next boarding facility, licensing office, or airline will ask for. Some of those documents are issued on their own. In Ontario, the College's guide lists health certificates and rabies vaccination certificates among the components of the medical record, along with laboratory reports and diagnostic images, so a complete-copy request there should name them. In other jurisdictions, a records export can omit the certificate even when the vaccine visit is in the chart.

An invoice line for a rabies vaccine is not the certificate. Local rabies-certificate fields are set by that city, county, or state. Ask the clinic that gave the vaccine for the certificate it issued. For travel, USDA APHIS pet-travel guidance says health certificates and rabies documentation are prepared with a USDA-accredited veterinarian and that the paperwork needs lead time. APHIS also says CDC is the authority for dog imports, and that a U.S.-vaccinated dog that has been in a high-risk country for rabies within the past six months needs a Certification of U.S.-Issued Rabies Vaccination form, submitted by a USDA-accredited veterinarian before the dog leaves the United States. That is a named travel form, separate from the ordinary request for the clinic chart.

Some of those certificates are issued through an electronic system with an owner portal. GlobalVetLink's MyVetLink says owners can view and download certificates of veterinary inspection, rabies vaccination certificates, and digital prescriptions that were issued through that system. The page is the vendor's description of its own portal. It covers documents created there. It does not mean a closed clinic's certificates are online, and it is not a source for who must release the medical record.

Why history is missing, and what is recoverable

A missing history is often a retention limit, a second facility, or a closed practice. It is not safe to assume the file was erased, and it is not safe to assume every older visit still exists.

California section 2032.3(b) requires records to be kept for a minimum of three years after the animal's last visit. The board FAQ says radiographs are part of the patient record and are kept for three years after the last visit. Ontario requires records to be kept for at least five years after the last entry, or until two years after the member ceases to practice, whichever occurs first. Radiographs there are kept as long as that patient record is kept. After the applicable minimum, the facility may no longer have the file.

When a California facility has moved or closed, the board's consumer FAQ says each managing licensee keeps a current address of record. The board's recommendation is to ask the Veterinary Medical Board for the most recent address, send a written request to that address, and file a complaint if there is no response. The FAQ still words that request as a request for a summary. The current statute is the source for asking for a copy. The address-of-record step is the board's published route for a California premises.

In Ontario, a veterinarian who closes a facility must arrange storage for up to two years after closure and tell clients and the College how to reach the records. Records can also sit at the emergency hospital or the specialty clinic that created them. A primary-care export does not include those files unless someone sent them. When a clinic changes software, notes can fail to move with the system. That is a software-migration problem, covered in the site's PIMS data-export checklist and PIMS migration failure modes. It is a different job from a client's request for the medical record.

The transfer-request checklist

Send the request to each facility, in writing, and name the animal, the documents, and the authorization. One workable version is: "Please send my new veterinarian a copy of the written record, the laboratory reports with units and reference intervals, and the imaging studies as DICOM files. I authorize that release. If you issued a rabies certificate or a health certificate, include that document too." The table is the detail behind that sentence. California and Ontario rules are labeled. They are not a 50-state code.

Use the California summary when you need the minimum in section 2032.3(b), and use the copy when the next clinic is working up the animal. The invoice column shows why a bill is a weak stand-in for the examination and the diagnostic report.

Critical patients, telehealth, and travel

A routine request can use the five-day California clock or the two-business-day Ontario expectation. Two California situations use a shorter path, and both are statutory rather than a general emergency custom.

Under Business and Professions Code section 4855(b), if the client asks because the animal is in critical condition, or because a direct transfer to another veterinary premises is recommended, the duty is tied to release of the patient. On release, the veterinarian provides a copy or a summary of the written record. If no written record is ready, the veterinarian communicates the information needed for continuity of care to the receiving veterinarian or premises, or to the client if the receiving premises is unknown. Section 2032.3(e) adds a separate emergency-service duty: on release, the client receives a legible copy that includes the examination findings, medication dosages and times, copies of diagnostic data or procedures, all radiographs with a signed release when they are transferred, a surgical summary, the tentative diagnosis and prognosis if known, and follow-up instructions.

California Business and Professions Code section 4826.6, also amended effective January 1, 2026, is the telehealth path. A veterinarian providing telehealth must have historical knowledge of the animal by obtaining and reviewing the relevant medical history and, if available, the medical records. If records from a previous in-person visit exist and are available to the client, the client may transmit those records, including diagnostic data, electronically. The statute does not say that sending a file creates a prescription, and it still requires a veterinarian-client-patient relationship before a drug is prescribed, with telehealth allowed only when that section's conditions are met.

In a referral, AVMA ethics say the referring veterinarian should provide pertinent information before or at the first contact, and the receiving veterinarian should report back. For the separate questions of when to refer a cancer patient, and what to bring to a first oncology visit, see oncology referral timing and the first-visit records and estimate checklist. Travel certificates need lead time with a USDA-accredited veterinarian, including the CDC form APHIS describes for a U.S.-vaccinated dog that has been in a high-risk rabies country in the past six months.

What the new clinic can and cannot do with what arrives

A transferred file supports the next visit. It does not replace that visit. The receiving veterinarian decides what the documents can carry forward and what to repeat. In California, section 4826.6 requires a veterinarian-client-patient relationship before prescribing, and it allows telehealth to meet that relationship only when the section's conditions are met, including review of the history and records. Other states write the relationship differently. When section 4826.6's conditions are met, telehealth can satisfy it. Sending the file does not itself authorize a prescription.

A radiograph describes the animal at the time it was taken. A study from months ago does not describe today's cough or breathing rate. The ACVR and ECVDI statement says the report should record how many images were assessed and should give another radiologist enough technical detail to judge the study. If the file is a single view, or the report does not say which images it covered, that is a reason for the receiving veterinarian to decide whether to re-image. Adding images later to a closed study can also leave the written report out of step with the file.

Laboratory numbers travel with their method. Reference intervals differ by analyzer, which is why the report has to come with the values. Hemolysis, lipemia, icterus, tube fill, and delayed separation can move specific results without a change in the animal, and the direction depends on species and method. The new veterinarian matches that report to the animal in the room and chooses what to repeat.

If a clinic refuses, delays, or has closed

Use the path that matches where the clinic is licensed. The steps below are the California board's consumer process and Ontario's professional standard. They are not a map of every practice act, and they are not legal advice.

1. Put the request in writing. Send a written request to the medical director or practice manager. Name the animal and the documents: the written record, the laboratory reports with units and reference intervals, and the imaging studies as DICOM files. If the clinic is in California, cite Business and Professions Code section 4855 and the five-day copy. If the clinic is in Ontario, cite the College standard and the two-business-day expectation for a complete copy. Cite the rule that applies to that clinic, not both rules at once.

2. Use the closed-practice route for that jurisdiction. If a California facility has moved or closed, ask the Veterinary Medical Board for the premises' most recent address of record, then send the written request there. The board FAQ says each managing licensee maintains that address. If an Ontario facility has closed, the standard requires storage for up to two years and notice to clients and the College of how to access the records.

3. File a complaint where the board or college provides one. The California FAQ says to file a complaint with the Veterinary Medical Board if a written request to a moved or closed premises gets no response, and it says the same if a veterinarian refuses to release radiographs to the new veterinarian who has the owner's authorization. That is a California complaint route. The 2019 JAVMA review found practice acts ranging from strict to minimal, so the complaint step stays with the board or college that actually published one.

A copying fee can be real, and this guide states no dollar amount. The California FAQ says a cost for duplication may apply. Ontario permits a reasonable fee to recover the cost of the copy, including materials, staff time, and postage, and it says payment is not a prerequisite for a timely copy. Ontario also says a veterinarian must not obstruct timely release because of unpaid fees, including a refusal to pay for the copy. The California FAQ describes a lien that allows the veterinarian to hold the animal until the bill is paid, and boarding charges may be added while the animal is held. That FAQ answer is about holding the animal. It does not describe the lien as a reason to withhold the record.

Sources

• American Veterinary Medical Association. Principles of Veterinary Medical Ethics of the AVMA. Section on Medical Records, property rights, confidentiality, client consent, and inter-veterinarian records transfer standards.

• California Legislative Information. California Business and Professions Code section 4855. Mandated veterinary recordkeeping, five-day client copy duty, and critical-condition direct transfer provisions (as amended effective January 1, 2026).

• California Veterinary Medical Board. 16 California Code of Regulations section 2032.3: Record Keeping; Records; Contents; Transfer. Minimum chart content, three-year retention mandate, radiograph ownership and release-and-return rules, emergency hospital transfer ownership, and laboratory data provisions.

• California Veterinary Medical Board. Consumers: Frequently Asked Questions. Consumer guidance on the address of record for a moved or closed premises, the complaint route, duplication cost, and the lien that allows a veterinarian to hold the animal until the bill is paid. The page still describes section 4855 as a summary within a reasonable time, which lags the five-day copy duty in the current statute.

• California Legislative Information. California Business and Professions Code section 4826.6. Veterinary telehealth requirements, patient historical knowledge mandates, and electronic transmission of prior records and diagnostic data.

• College of Veterinarians of Ontario. Guide to the Professional Practice Standard: Medical Records. Client information rights, two-business-day complete copy expectation, digital radiograph quality standards, electronic audit trails, and closed-practice record storage requirements.

• AVMA Journals (JAVMA). Maintaining medical record confidentiality and client privacy in the era of big data: ethical and legal responsibilities (JAVMA 255(3):282-288). Legal review establishing that HIPAA does not apply to veterinary medicine and analyzing state veterinary practice act disclosure frameworks.

• American College of Veterinary Radiology. Radiology: ACVR Digital Imaging Standards Committee Recommendations. Specifications defining radiographic DICOM studies and series, 2.5 lp/mm clinical spatial resolution standards, and closed study preservation.

• Veterinary Radiology & Ultrasound. ACVR and ECVDI Consensus Statement on Imaging Report Foundations. Professional consensus on imaging report components, image count verification, and technical communication between radiologists and attending clinicians.

• Cornell University College of Veterinary Medicine. Interferences in Laboratory Testing (eClinPath). Teaching reference for analytical and pre-analytical effects of hemolysis, lipemia, and icterus.

• Cornell University College of Veterinary Medicine. Common Artifacts in Hematology and Chemistry Samples (eClinPath). Clinical pathology analysis of handling artifacts, tube underfill distortion, anticoagulant contamination, and delayed serum separation.

• USDA Animal and Plant Health Inspection Service. Pet Travel Guidelines (USDA APHIS). Federal regulatory requirements for Certificates of Veterinary Inspection, USDA-accredited veterinarians, and CDC dog import compliance.

• VCA Animal Hospitals. The Importance of Sharing Medical Records. Client-facing guidance highlighting clinical differences between medical charts and billing invoices.

• GlobalVetLink. MyVetLink: Online Animal Health Records Portal. Vendor page for an owner portal covering certificates of veterinary inspection, rabies certificates, and digital prescriptions issued through that system.