Ordering the Cystatin C Test
Ordering a Cystatin C test is important for assessing kidney function. This test measures the level of cystatin C, a protein that helps determine how well your kidneys are filtering blood. Interestingly, cystatin C levels can provide insights into cardiovascular health, making it a valuable tool for comprehensive health assessments.
Here are some specific benefits of the Cystatin C test:
- Provides an early indication of kidney function decline.
- Offers a more accurate assessment of kidney health compared to creatinine alone.
- Helps monitor kidney function in people with chronic conditions like diabetes.
- Assists in evaluating cardiovascular risk.
- Useful for adjusting medication dosages in patients with kidney impairment.
Who Should Consider the Kidney Function Test
Individuals with chronic conditions such as diabetes or hypertension may benefit from this test. For example, someone managing diabetes might want to monitor their kidney function regularly to prevent complications.
Consider these scenarios where the test might be beneficial:
- People with a family history of kidney disease.
- Individuals experiencing fatigue or swelling in the legs.
- Those with high blood pressure or diabetes.
- Patients undergoing treatment with medications that affect kidney function.
- Individuals with unexplained changes in urine output.
Ordering this test can help you understand your kidney health better. Not taking the test might delay the detection of potential kidney issues, which could lead to more serious complications.
Preparing for the Kidney Health Assessment
Fasting is required for 8 hours before the test. It’s important to follow your doctor’s instructions regarding any medications or supplements you are taking.
Labs Included When Ordering Your Cystatin C Test
| Test Name | Reference Ranges | Significance | Low and High Levels of Cystatin C |
|---|---|---|---|
| Cystatin C | 0.6 – 1.2 | Cystatin C is a protein that helps assess kidney function. It is a more reliable marker than creatinine for detecting early kidney impairment. | High levels mean reduced kidney function.
Low levels mean normal kidney function. |
Reference ranges can vary, so it’s a good idea to check the Quest Diagnostics lab test directory for the most current information.
Cystatin C FAQ
Is there Cystatin C testing near me?
You can find nearby draw locations with our patient service center locator, which also offers mobile phlebotomy options. During the collection, a technician will clean the area, use a small needle to collect the sample, and you might feel a slight pinch.
What is the cost of the test?
The cost of the Cystatin C test can be found at the top of the page, and pricing includes collection fees when visiting patient service centers, with no hidden fees.
How often should I retest?
Retesting is generally recommended annually for those with chronic conditions affecting the kidneys. Regular monitoring can help manage and prevent complications.
How accurate is the test?
The Cystatin C test uses a nephelometric method, which is highly specific and sensitive for measuring cystatin C levels. TrueHealthLabs.com partners only with CLIA-certified labs to ensure quality and accuracy.
Medical Review Board
Reviewed by Jeff Donohue M.D. from Body Logic and Brady Hurst DC, CCCN. Written by True Health Lab’s team of editorial health contributors.
Disclaimer: This information is for educational purposes only and not intended as medical advice. Consult your healthcare provider for personalized guidance.
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