강아지 신장 기능 조기 선별(SDMA) 관리 추천 BEST와 고르는 기준 총정리

7 Key Points on Early Signs of Canine Kidney Failure and SDMA Screening, According to Veterinarians

KidneyTop PicksMeongsiljang Veterinary Advisory Board

Early screening for kidney function in dogs using SDMA is an important test for detecting kidney damage caused by aging or disease at an early stage. It is crucial to conduct accurate testing and choose appropriate management products.

What Is Early Screening for Canine Kidney Function (SDMA)?

A scene of drawing a blood sample from a puppy, labeled on the tube for SDMA testing

The early screening test for canine kidney function, known as SDMA, is a blood test that can detect abnormalities before clinical signs of kidney damage appear. SDMA is a byproduct of protein metabolism, and measuring its levels helps identify decreased kidney function at an early stage. This test is especially useful for senior dogs or breeds at higher risk of kidney disease. Regular SDMA testing allows for early management of your dog’s kidney health. It is important to review the results with your veterinarian and continuously monitor your pet’s overall health.

Selection Criteria: Tips for Choosing a Clinic for SDMA Early Screening

Accuracy is the cornerstone of SDMA testing. A test that can quickly and precisely detect declining kidney function should be your top priority. Speed matters too, since rapid results enable timely intervention. While keeping costs within your budget, verify that the test is available at your veterinary clinic. Choosing a facility equipped with proper instruments and specialized staff enhances reliability. Consulting with your veterinarian to select the most appropriate test is essential.

A veterinarian reviewing SDMA test results on a tablet

Check 1: Whether the Clinic Offers Kidney Screening Including SDMA

SDMA is a marker that begins to rise when kidney function declines by approximately 40%, allowing for the detection of renal changes earlier than creatinine levels increase. For early screening, it is advisable to choose a veterinary clinic that offers kidney tests including SDMA. It is better to evaluate SDMA alongside creatinine and BUN rather than relying on a single indicator, and to compare results with baseline values. Confirm which parameters are included in the test before proceeding.

An informational image explaining whether we perform kidney screening tests that include SDMA.

Check 2: Whether Regular Screening and Urine Tests Are Offered Together

Kidney disease often progresses silently, with symptoms appearing only at advanced stages, so regular screening is essential for senior dogs and high-risk breeds even when they appear healthy. To accurately assess kidney function, urine tests such as urine specific gravity and urine protein-to-creatinine ratio (UPC) should be evaluated alongside SDMA. It’s best to choose a clinic that includes kidney screening in routine check-ups and adjusts the testing frequency based on the results. Even better is a practice that also provides guidance on hydration and dietary adjustments.

An informational image about whether regular screenings and urine tests are offered together.

Check 3: Whether Trends Are Interpreted and Linked to Early Management

Rather than focusing on a single SDMA value, it’s more meaningful to monitor trends by testing the same marker at regular intervals. If the values consistently rise, your veterinarian should classify the kidney status according to IRIS stages and guide you in slowing disease progression through early dietary and hydration management. Since the goal of early screening is to detect issues sooner and initiate care earlier, choose a clinic that clearly explains how your results connect to the next steps in management.

An illustrative guide on how to interpret trends and link them to early-stage care.

Checklist for Choosing a Clinic for SDMA Early Screening

Item	Recommended Criteria
Test Items	A clinic that runs kidney screening viewing SDMA together with creatinine and BUN
Test Operation	A clinic that includes it in regular screening for senior dogs and views urine specific gravity and proteinuria together
Interpretation Capability	A veterinarian who interprets kidney condition through trends and IRIS staging
Result Interpretation	A clinic that connects to and guides early management such as diet and hydration from the early stages
Cost Guidance	A clinic that informs of expected costs and the possibility of additional tests in advance before testing

This is not a table recommending specific products or clinics, but criteria to refer to when consulting a veterinarian. Always make treatment and testing decisions together with a veterinarian through consultation.

Caution: SDMA Test Results Should Be Interpreted With a Veterinarian

A high SDMA level doesn’t necessarily mean your pet has kidney disease. SDMA isn’t specific to kidney disease alone; it can also rise due to prerenal factors that reduce blood flow to the kidneys, such as dehydration or heart failure (decreased cardiac output), or postrenal factors like urinary tract obstruction. Additionally, results may vary for the same sample depending on the testing equipment and analytical methods used. Therefore, a veterinarian must evaluate your pet’s overall health comprehensively. To avoid misunderstandings, discuss the test results with your vet and work together on any additional testing or management plans.

Tips for Early Screening of Canine Kidney Function (SDMA)

Unlike creatinine, SDMA is not significantly affected by factors such as age, body size, or muscle mass, so prolonged fasting before the test is not strictly necessary. However, dehydration can reduce blood flow to the kidneys and artificially elevate SDMA levels, so it is important to allow your pet to drink water normally to prevent dehydration rather than restricting fluids. Before the test, minimize stress and ensure your pet is calm. After the test, consult your veterinarian immediately if you notice any unusual behavior, loss of appetite, or vomiting. Regular testing enables early detection of changes in kidney function, facilitating timely management. It is important to interpret results based on trends over time rather than a single value, and to discuss them comprehensively with your veterinarian. Protect your pet’s health with accurate understanding.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

Which dogs require SDMA testing?

We recommend this for senior dogs, breeds known to have a genetic predisposition to kidney disease, and puppies with chronic conditions. Pet owners who want to focus on regular health maintenance should also discuss this option with their veterinarian.

What is the difference between an SDMA test and a traditional kidney function test?

SDMA can detect a decline in kidney function earlier than traditional markers like creatinine and BUN. While creatinine levels only rise after about 75% of kidney function is lost, SDMA begins to increase when kidney function drops by approximately 40%. Additionally, unlike creatinine, SDMA is not influenced by muscle mass (lean body weight), making it a more reliable indicator.

Are home SDMA test kits accurate?

SDMA levels are typically measured using equipment at veterinary clinics or through external laboratories. Since results can vary depending on the analytical equipment and methods used, even with the same sample, it’s best to confirm the reference ranges and interpretation with the testing facility and your veterinarian. Share the results with your vet so you can decide together whether additional tests are needed.

Does a high SDMA level always mean treatment is necessary?

Not necessarily. Dehydration or other non-renal factors can cause temporary elevations. Your veterinarian will assess your pet’s overall condition before making a determination.

How often should the SDMA test, included in the regular check-up package, be performed?

The frequency of check-ups varies depending on your dog’s age and risk factors. For senior dogs or those at higher risk of kidney disease, more frequent monitoring is recommended. If your dog is taking medications that can affect the kidneys, such as blood pressure drugs, kidney function tests may be needed every 3 to 4 months. Please consult your veterinarian to determine the most appropriate schedule for your pet.

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References

[1] The Veterinary Workbook of Small Animal Clinical Cases, Case 28, 2022

[2] Small Animal Critical Care Medicine, 3rd Edition, Catherine E. Langston et al., 2021

[3] The Cat, Clinical Medicine and Management, 2nd Edition, 2020