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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallFor an apparently healthy senior dog or cat, the 2023 AAHA Senior Care Guidelines use a 6–12-month interval for a comprehensive complete blood count (CBC), chemistry panel and urinalysis. Other tests are risk-based: parasite testing may be more frequent, dogs generally have annual heartworm and tick-borne disease screening, thyroid and blood-pressure checks are listed annually, and imaging or cardiac tests are added when breed, examination findings, symptoms or a planned anesthetic event justify them. This is a starting plan for discussion with your veterinarian, not an automatic order set for every pet.
The core schedule at a glance
The AAHA table is designed for senior-care planning in apparently healthy animals. It separates routine screening from tests triggered by symptoms or an abnormal result. The following intervals are the guideline recommendations; your veterinarian may shorten, lengthen or add testing after reviewing the animal’s history, examination, age, breed, lifestyle and previous results.
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| Test | Senior dogs | Senior cats | How to interpret the interval |
|---|---|---|---|
| Fecal parasite testing | 1–4 times per year | 1–2 times per year | Choose the cadence according to preventive products, outdoor exposure, health and lifestyle. |
| Tick-borne disease testing | Annually | Not applicable in the AAHA table | Canine recommendation. |
| Heartworm testing | Annually | Follow American Heartworm Society guidance | Do not transfer the canine annual interval to cats. |
| Comprehensive CBC | Every 6–12 months | Every 6–12 months | Includes cell morphology and differentials; a pathologist may review the smear when necessary. |
| Chemistry panel | Every 6–12 months | Every 6–12 months | Listed analytes include total protein, albumin, ALT, glucose, BUN, creatinine, sodium, potassium, calcium and SDMA when available. |
| Urinalysis | Every 6–12 months | Every 6–12 months | Includes urine specific gravity, sediment, glucose, ketones, bilirubin, protein and occult blood. |
| Thyroxine (T4) | Annually recommended | Annually strongly recommended | Strength of recommendation differs by species. |
| Blood pressure | Annually recommended | Annually strongly recommended; every 6–12 months in healthy geriatric cats | More frequent feline checks may be appropriate in geriatric patients. |
| ECG | Annually for breeds at high cardiac risk, or when indicated | When clinically indicated | Examples of higher-risk dog breeds in the table are Boxers and Dobermans; this is not an annual test for every senior pet. |
| Urine protein:creatinine ratio | When proteinuria is found or microalbuminuria persists | Conditional follow-up, not a routine test for every visit. | |
| Imaging | As clinically indicated; breed-specific screening may be appropriate | As clinically indicated | No blanket annual imaging interval is supplied. |
| Retroviral testing | Not applicable | Consider according to individual risk | Feline risk-based testing. |
| NT-proBNP | Annually; strongly consider before an anesthetic event | The AAHA table gives this merged recommendation for dogs and cats. | |
What counts as “senior”?
There is no single birthday at which every dog or cat becomes senior. AAHA describes canine senior life stage as roughly the final 25% of an individual dog’s estimated lifespan, so breed and body size affect the calendar age. Feline life-stage guidance defines senior cats as older than 10 years.
AAHA’s 2024 public advice says dogs older than 7 and cats older than 10 should have a veterinary examination every six months. That is an examination interval, not a promise that every listed laboratory test is repeated at every visit. The physical examination and the diagnostic schedule work together: an examination can prompt earlier testing, while stable results may support the longer end of a 6–12-month laboratory interval.
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The three tests that form the routine laboratory screen
Comprehensive CBC
A comprehensive CBC evaluates blood-cell numbers and, when needed, cell morphology and differentials. It gives the veterinarian a baseline for later comparison and can be paired with a pathologist review if the automated result or smear appears unusual. The senior-care table places this test every 6–12 months for both dogs and cats.
Chemistry panel
The recommended chemistry profile includes total protein, albumin, ALT, glucose, BUN, creatinine, sodium, potassium and calcium, with SDMA when available. These analytes cover several organ and metabolic systems, but a chemistry result is interpreted in context rather than as a diagnosis by itself. Both species are listed at 6–12-month intervals when apparently healthy.
Urinalysis
Urinalysis complements blood chemistry. The listed elements are urine specific gravity, sediment, glucose, ketones, bilirubin, protein and occult blood. A urine sample can therefore change how a borderline blood value is understood or reveal a finding that warrants a targeted follow-up. The routine interval is every 6–12 months for senior dogs and cats.
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Tests that depend on species and exposure
Dogs: parasites, heartworm and tick-borne disease
Fecal testing is listed one to four times per year for senior dogs. The range is intentional: preventive products, travel, hunting or scavenging, contact with other animals and general lifestyle alter exposure risk. A dog with frequent outdoor exposure may need the shorter interval, while a consistently protected, low-risk dog may be tested less often.
Annual heartworm and tick-borne disease testing are listed for dogs. These are separate checks: heartworm screening should not be treated as a substitute for tick-borne disease testing. The annual intervals are guideline recommendations for senior-care planning and do not replace a diagnostic workup when a dog has compatible signs.
Cats: fecal and retroviral testing
Senior cats are listed for fecal parasite testing one to two times per year, again adjusted for health and lifestyle. Retroviral testing is not assigned a fixed interval; the veterinarian considers the individual cat’s risk instead. A new household, outdoor access, exposure to cats of unknown status or other history may change that decision.
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For feline heartworm testing, use the American Heartworm Society’s feline guidance rather than importing the canine annual schedule. The AAHA table intentionally does not provide a one-size-fits-all feline interval.
Thyroid and blood-pressure screening
T4 testing is recommended annually for senior dogs and strongly recommended annually for senior cats in the AAHA table. The different wording reflects a species-specific strength of recommendation, not a reason to ignore a thyroid concern in the other species. Clinical signs, examination findings and prior values can justify testing sooner.
Blood pressure is recommended annually for dogs and strongly recommended annually for cats. For a healthy geriatric cat, the table gives a 6–12-month interval. A pressure measurement is a screening check; an unexpected value should be interpreted with the animal’s stress level, examination and other results before decisions are made.
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When cardiac tests, imaging or a urine protein ratio belong
ECG
An ECG is listed annually for dogs from breeds at high cardiac risk, with Boxers and Dobermans given as examples. For any dog or cat, it is also appropriate when an arrhythmia is suspected or the examination indicates a need. The table does not support annual ECGs for every senior animal, and the feline entry is the same risk- or indication-based approach.
NT-proBNP
AAHA lists NT-proBNP annually for both species and says to strongly consider it before an anesthetic event. It is an adjunct to the examination and other findings, not a replacement for a complete pre-anesthetic assessment.
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Urine protein:creatinine ratio
This ratio is a follow-up test when proteinuria is identified or when microalbuminuria persists. It is not a routine add-on for every healthy senior pet. The initial urinalysis determines whether this more specific measurement is warranted.
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Imaging
Imaging is ordered when clinically indicated. Breed-specific screening may be appropriate for some dogs, but the AAHA table supplies no universal annual imaging program for either species. Signs, examination findings, a known condition or a high-risk breed determine the modality and timing.
How a veterinarian individualizes the calendar
- Confirm life stage and baseline risk. Age, breed, size, previous illnesses, medications, preventive products and indoor or outdoor lifestyle establish whether the pet fits the usual senior-screening pathway.
- Review the examination before choosing tests. A heart murmur, weight change, altered thirst or urination, abnormal pulse, skin finding or neurologic change can turn a screening visit into a focused diagnostic workup.
- Set the routine screen. For an apparently healthy senior, discuss CBC, chemistry and urinalysis at the 6–12-month interval, then add the species-appropriate parasite, thyroid and blood-pressure checks.
- Add conditional tests only when their trigger exists. Examples include a urine protein:creatinine ratio after proteinuria, an ECG for a high-risk breed or suspected arrhythmia, imaging for a clinical indication, and retroviral testing for a cat with relevant risk.
- Use trends, not isolated numbers. Bring prior laboratory reports so the veterinarian can compare values over time. A small change that persists may matter even when one result remains inside a laboratory reference range.
- Shorten the interval after an abnormal result. The 6–12-month schedule applies to screening of apparently healthy animals. A confirmed abnormality, ongoing symptom or diagnosed disease requires its own recheck plan.
Screening is different from testing a sick pet
The published frequencies are not a waiting rule. If a senior animal is losing weight, drinking or urinating more, vomiting, coughing, tiring, changing appetite, showing behavior changes or developing any other concerning sign, contact a veterinary team rather than waiting for the next scheduled screen. The clinician may repeat laboratory work, add imaging or choose a different test altogether.
Likewise, an animal with an established condition may need monitoring more often than once or twice a year. AAHA describes senior care as an evidence-guided approach for healthy and unhealthy animals, with testing tailored to history and physical examination.
Planning a practical senior-care year
A useful conversation with the veterinary team starts with four questions:
- Which of the 6–12-month CBC, chemistry and urinalysis interval fits this pet’s age, history and previous results?
- Which parasite, heartworm, tick-borne, retroviral, thyroid and blood-pressure checks apply to this pet’s species and lifestyle?
- Does breed risk, a planned anesthetic event or an examination finding justify ECG, NT-proBNP or imaging?
- If a result is abnormal, when will it be repeated and what follow-up test will answer the next clinical question?
Keeping a dated record of results, medications, preventive products and changes in appetite, weight, thirst, urination or activity makes that plan more precise at each visit. Home urine strips, consumer blood-pressure devices and other kits do not perform or replace the veterinary examination and interpreted laboratory testing recommended in senior-care guidance.
Quick Recap
Key distinctions to remember
- The central laboratory screen is CBC, chemistry and urinalysis every 6–12 months for both senior dogs and cats.
- Dogs have annual heartworm and tick-borne disease testing listed; cats require feline-specific heartworm guidance.
- Fecal testing ranges reflect exposure and prevention rather than a fixed rule.
- Annual T4 and blood-pressure checks are listed for both species, with stronger recommendations for cats and a 6–12-month blood-pressure interval for healthy geriatric cats.
- ECG, NT-proBNP, urine protein:creatinine ratio, retroviral testing and imaging are selected by risk, findings or an upcoming anesthetic event.
- AAHA’s once- or twice-yearly workup is a framework for a veterinarian-client discussion, not a universal order set.
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