When a veterinarian recommends diagnostic testing for your dog or cat, it is natural to want a clear explanation. Testing may be suggested because of a new concern, an ongoing change, a finding during an examination, or as part of a larger care conversation. You do not need to understand every test name before you arrive. A short list of questions can help you understand the purpose of the recommendation, how to prepare your pet, and what the next conversation may involve.
This guide is for caregivers preparing to talk with a veterinarian. It does not explain what any particular result means or tell you whether a test is right for your pet. Those decisions depend on the pet’s history, examination, current signs, and the veterinarian’s clinical judgment. If your pet has difficulty breathing, collapses, has a seizure, is bleeding uncontrollably, seems to have severe or sudden pain, cannot urinate, or has a sudden severe decline, call a veterinarian immediately rather than waiting to research testing.
Start with the reason testing was recommended
Diagnostic testing is a tool for gathering information; it is not a diagnosis by itself. Ask the veterinarian what question the test is intended to help answer. That question might relate to a symptom, a body system, a change found during the examination, or a need to better understand what to do next. Knowing the purpose helps you see how the recommendation fits into the broader care plan.
Questions about purpose
- What information are you hoping this test will provide for my pet?
- What in my pet’s history, signs, or examination led you to recommend it?
- How could the result affect the next conversation or care plan?
- Is this test being recommended now because of an urgent concern, a routine finding, or an ongoing change?
- Are there other observations I should track while we wait?
The goal is not to challenge the recommendation; it is to make sure you understand it. If you have more questions than you can cover, ask which one is most important to answer before your pet leaves the hospital.
Share the complete picture you have
Test results are only one part of a veterinary assessment. Your observations at home can provide context that no single test can supply. Before the visit, make a brief timeline of what you have noticed. Include when a change started, whether it comes and goes, what seems to make it better or worse, and whether it is changing over time.
Depending on the concern, your notes may include appetite, drinking, urination, bowel movements, vomiting, coughing, energy, sleep, mobility, scratching, weight, or behavior. Specific descriptions are more useful than a conclusion. For example, “vomited twice after dinner on Tuesday” gives a clearer starting point than “has a stomach problem.” Photos or short videos can help with signs that do not happen during the appointment.
Bring or photograph labels for all medications, supplements, and foods your pet receives. Tell the veterinarian about recent changes to diet, travel, boarding, possible access to something unusual, contact with other animals, and prior health records if they are relevant. Do not stop a prescribed medication or change a dose unless the veterinary team directs you to do so. For a more detailed symptom-organizing framework, see our guide to what to track before an internal-medicine visit.
Ask how to prepare safely
Preparation instructions can differ depending on the test, the reason it is being performed, your pet’s age and health, and whether other care is planned that day. Never assume that directions from another pet’s appointment apply to yours. Call the hospital if you are uncertain about anything before the visit.
Preparation questions to write down
- Should my pet eat or drink normally before this appointment?
- Should I give regular medications or supplements as usual?
- Do I need to bring a stool, urine, or other sample, and how should it be collected or stored?
- What records, medication labels, or previous results would be helpful?
- How long should I expect the visit to take, and are there arrival instructions?
- Are there signs that should make me call before the appointment instead of waiting?
Only follow fasting, medication, sample-collection, or travel instructions given for your individual pet. Withholding food, water, or medicine without direction can be unsafe or can interfere with the plan. If your pet refuses food, vomits, or otherwise cannot follow the instructions you received, call the veterinary team and explain what happened.
Make the visit easier for your pet
A planned testing visit can still feel unfamiliar to a pet. Use a secure carrier for a cat and a safe restraint or carrier for a dog during travel. Bring a leash for dogs, keep cats safely enclosed, and allow enough time so you do not need to rush. A clean towel or familiar bedding may be helpful for some pets, as long as it does not interfere with any instructions you were given.
Let the team know if your pet is fearful in a carrier, becomes distressed in the car, dislikes certain handling, has a history of escape attempts, or has reacted strongly during a previous visit. This is practical safety information. Ask before giving any calming product, supplement, sedative, or human medication; something that is suitable for one pet may not be appropriate for another.
Understand when and how results will be discussed
Before leaving, ask what happens after the test is completed. Some information may be available quickly, while other results may require more time. The right timing depends on the specific test and the laboratory or process involved. Rather than expecting a universal turnaround, ask what is typical for your pet’s situation and how the hospital will communicate with you.
Questions about results and follow-up
- When should I expect to hear from the veterinary team?
- Will someone call, email, or ask me to schedule a follow-up conversation?
- What should I watch for at home while we are waiting?
- What changes would mean I should call right away?
- Will my pet need a recheck, repeat testing, or another kind of evaluation?
A result may add useful information without providing a complete answer on its own. Your veterinarian may consider it alongside the examination, your notes, prior records, and any other recommended evaluation. Avoid trying to interpret a report through a general internet search before you have discussed it with the veterinary team.
Keep a simple record after the visit
Save the visit summary, any instructions, and the names of tests discussed in one place. Add the date, the reason for the visit, questions you still have, and the contact plan you were given. Continue noting changes at home in a concise way. If the team asks you to monitor a particular sign, write down what you observe and when it happens rather than relying on memory.
It can help to choose one person in the household to keep the record updated, especially when more than one caregiver is involved. If another person brings the pet to a follow-up, send the notes and current medication information with them. Clear records help everyone describe the same timeline.
When testing conversations cannot wait
Diagnostic testing can be part of routine or planned care, but an appointment should not delay action when your pet seems seriously unwell. Call a veterinarian right away for difficulty breathing, collapse, seizures, uncontrolled bleeding, severe or sudden pain, repeated vomiting, inability to urinate, or a sudden severe decline. Our urgent veterinary care guide offers broader decision-support information, but it cannot assess your individual pet.
Kay Animal Hospital lists surgery and diagnostics, internal medicine, hospitalization, urgent care, and emergency care during regular hours among its published service areas. Contact the hospital to discuss your pet’s individual needs, preparation instructions, and current availability. For urgent concerns during regular hours, call immediately. If the hospital is closed, seek direction from an appropriate emergency veterinary provider rather than waiting for a planned appointment.
Frequently asked questions
Should I fast my pet before diagnostic testing?
Only if the veterinary team has told you to do so. Instructions vary with the type of test and your pet’s needs. Ask before the appointment and call for guidance if your pet cannot follow the instructions or seems unwell.
Can I give my pet their usual medication before testing?
Do not assume. Ask the veterinarian or hospital staff about each medication and supplement, including the dose and time it is usually given. Do not stop or change prescribed medicines without veterinary direction.
What should I bring to a testing appointment?
Bring any records the hospital requested, current medication or supplement details, and a concise list of observations and questions. Ask ahead if a sample is needed and how it should be handled.
What if my pet gets worse while we are waiting for results?
Call a veterinarian promptly and describe the change, when it started, and how your pet is behaving. Do not wait for a planned follow-up if you are concerned your pet is deteriorating.
Veterinary information disclaimer: This article provides general educational information and is not a diagnosis, treatment plan, or substitute for veterinary care. Contact a veterinarian for advice about your pet. For urgent concerns, call a veterinarian immediately.