CYSTATIN C

Cystatin C is a blood test that measures the concentration of the Cystatin C protein, a reliable marker of kidney filtration function (GFR) that is less influenced by muscle mass than serum creatinine. The laboratory quantifies serum Cystatin C to help detect early declines in kidney function and to monitor progression or response to treatment. This test is especially useful for sensitive kidney assessment and can be performed conveniently at home across Dubai through Touch Connect’s lab-at-home service.

Clinically, Cystatin C is used for early detection of chronic kidney disease, monitoring patients with conditions that affect renal function (such as diabetes or hypertension), and refining eGFR estimates when creatinine may be misleading. It is recommended for elderly patients, those with low or high muscle mass, patients on potentially nephrotoxic medications, and transplant recipients who require close kidney monitoring. Results support timely clinical decisions and referral to nephrology when indicated.

• Cystatin C (Serum)
• Cystatin C concentration (mg/L)
• Estimated GFR (eGFR) — Cystatin C based

• Suspected or early chronic kidney disease (CKD) detection
• Monitoring renal function in diabetes or long-standing hypertension
• When serum creatinine may be unreliable (elderly, low/high muscle mass)
• Prior to or during treatment with nephrotoxic medications
• Post-renal transplant monitoring
• Unexplained rise in serum creatinine or reduced eGFR

• More sensitive detection of reduced GFR than creatinine alone
• Less affected by muscle mass, age, or gender
• Supports accurate eGFR calculation for clinical decision-making
• Convenient at-home blood collection anywhere in Dubai
• Timely results to aid early intervention and medication adjustments

• At-home venous blood sample collection by a trained phlebotomist
• No fasting required (unless bundled with tests that require fasting)
• Inform the technician or clinician about recent corticosteroid use or known thyroid disease
• Available across Dubai with electronic delivery of results and physician consultation options