Cystatin C, Serum

The Cystatin C, Serum test measures the level of cystatin C in your blood.

By measuring cystatin C levels, this test provides a more accurate assessment of kidney function compared to other tests like creatinine, especially in detecting early kidney damage. This test is thus used to:

• To evaluate kidney function: This test helps determine how well your kidneys are filtering waste products from your blood.
• To detect kidney damage: Cystatin C levels can rise even when creatinine levels are still within the normal range, allowing for early detection of kidney damage.
• To monitor progression of kidney disease: Regular testing of cystatin C levels can help track the progression of kidney disease and assess the effectiveness of treatment.

This test is recommended in the following situations:

• Chronic kidney disease: Patients with known or suspected kidney disease may need regular monitoring of cystatin C levels to assess kidney function.
• Early detection of kidney damage: If you have risk factors for kidney disease, such as diabetes or hypertension, this test may be recommended to detect early signs of kidney damage.
• Monitoring treatment: For patients undergoing treatment for kidney disease or receiving medications that may affect kidney function, regular testing of cystatin C levels helps monitor their response to treatment.

Elevated cystatin C levels may indicate impaired kidney function, kidney damage, or other conditions affecting the kidneys. 

This test involves drawing a small sample of blood from a vein in your arm using a needle and a syringe. You may feel a slight pinch as the needle is inserted, but the procedure is generally quick and painless.

To prepare for this test:

• Fasting is not required; you can eat and drink normally.
• Inform your doctor about any medications or supplements you are taking as they may affect the test results.
• Wear loose-fitting clothes that allow easy access to your arm for blood collection.

Please reach out to your healthcare provider for any specific requirements.

Other tests that may be ordered alongside Cystatin C, Serum include:

• Creatinine level: This test measures another marker of kidney function.
• Urinalysis: A urine test that provides additional information about kidney health.
• Glomerular filtration rate (GFR): A calculation based on blood creatinine levels that estimates kidney function.

These tests help provide a comprehensive assessment of kidney health.

Serum cystatin C test, cystatin clearance test

Kidney disease refers to the impairment of kidney function, leading to the accumulation of waste products and fluid imbalances in the body. It can be caused by various factors, including underlying medical conditions, medications, and genetic factors. Early detection and management are crucial to prevent further damage and complications.