What is the difference between azotemia and uremia?

Azotemia refers to elevated nitrogenous waste products in the blood — a laboratory finding. Uremia describes the clinical syndrome that develops when kidney function deteriorates enough to cause symptoms. If you have concerns about either, ask your vet for a thorough evaluation.

What key tests will the vet perform to assess kidney function?

Common tests include a blood biochemistry panel, urinalysis, and urine specific gravity measurement. An abdominal ultrasound or further imaging and follow-up tests may also be arranged depending on the initial results and your pet's clinical signs.

What home care can I provide to support my pet?

Under your vet's guidance, monitor and record your pet's water intake, urine output, number of vomiting episodes, and any changes in appetite. Follow dietary recommendations and attend scheduled check-ups. Ask your vet whether additional fluid support or specialist referral is needed.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

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Disease Guide

Azotemia & Uremia in Dogs and Cats: Symptoms, Kidney Testing & Care [2025]

Azotemia and uremia are signs of impaired kidney function; distinguishing between acute and chronic kidney disease is essential for planning the right course of treatment.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap Editorial Team

Sources: IRIS, ACVIM, National Taiwan University Veterinary Hospital

When to See a Vet

Seek immediate veterinary care (emergency)

•Repeated vomiting and unable to drink or eat
•Severe lethargy or noticeably reduced responsiveness
•Very little urine output or no urination observed for an extended period

Schedule a clinic visit soon (within 24–72 hours)

•Persistent low energy but still able to stand and move briefly
•Noticeably reduced appetite for more than a day, unwilling to eat
•Increased urination or excessive water intake with ongoing changes

01What Symptoms Indicate Something Is Wrong?

Kidney dysfunction such as azotemia or uremia often presents with non-specific signs in dogs and cats. Recognising these early can help your vet assess the condition and arrange appropriate tests.

Persistent weakness, noticeably reduced activity, or loss of interest in play
Poor appetite or refusal to eat for more than a day — monitor closely for changes
Repeated vomiting or continuous vomiting that prevents eating or drinking
Diarrhoea or abnormal stools, combined with weight loss
Ongoing weight loss or reduction in muscle mass (becoming thin or frail)
Frequent urination, increased water intake, or significant changes in urination frequency and volume

Seek emergency care immediately if you notice the following symptoms:

⚠️ Repeated vomiting with inability to keep water or food down
⚠️ Severe lethargy or markedly reduced responsiveness
⚠️ Very little urine output or no urination for an extended period

02How to Assess Abnormal Signs at Home: Key Observations and When to Seek Emergency Care

Simple records and videos taken at home can help your vet understand how the condition is progressing and speed up the diagnostic process.

Note when symptoms started and how they have changed over time (e.g. when vomiting began)
Count and record the number of vomiting episodes, the timing, and whether blood is present
Film vomiting or urination/defecation episodes on your phone to show your vet
Weigh your pet weekly or daily and track any changes
Record the frequency and volume of urination, and note any unusual odour or blood in the urine
Monitor your pet's alertness, energy level, sleep patterns, and water intake

03How Will the Vet Make a Diagnosis? Common Examination and Tests

At the clinic, your vet will use a systematic physical examination and diagnostic tests to assess kidney function and identify possible underlying causes before deciding on next steps.

Physical examination

palpation, mucous membrane colour, hydration status, and overall condition assessment

Blood and biochemistry panel

assessing kidney function markers and electrolyte imbalances

Urinalysis and urine specific gravity

checking for protein, blood, or signs of infection in the urine

Abdominal X-ray

initial evaluation of kidney size and abdominal structures

Advanced imaging (ultrasound, CT, or MRI)

assessing kidney structure and detecting abnormalities

Kidney biopsy if needed to clarify the underlying cause (typically performed at a specialist centre or when clinically appropriate)

04Treatment and Home Care After Diagnosis: Medications, Diet, and Care Guide

Treatment focuses on supportive care, with follow-up testing and adjustments to diet and medication based on how the condition progresses.

Symptomatic support: anti-nausea treatment, fluid therapy, and electrolyte correction to stabilise the condition
Medications and prescription diet adjusted to the pet's condition, with scheduled follow-up appointments
Your vet will recommend a kidney-specific prescription diet or appropriate dietary restrictions
Key home care: monitor urine output, water intake, and changes in alertness
Schedule follow-up blood and urine tests as directed by your vet to evaluate treatment response
If the condition fluctuates or does not improve, referral to a specialist hospital may be recommended

05What to Prepare Before the Vet Visit: Key Information to Help Your Vet Identify the Cause

Note the onset and progression of symptoms, and any potential exposures or recent changes in environment

Record how much your pet has been eating and drinking over the past few days

Log the frequency and timing of vomiting, diarrhoea, and urination episodes

Bring a list of all current medications and supplements with their dosages

If possible, bring a fresh urine sample or videos of any symptoms for your vet to review

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.