Creatinine (Serum)
Creatinine is a waste product from muscle metabolism that kidneys filter from blood. Serum creatinine is the primary marker for kidney function. Used to estimate glomerular filtration rate (eGFR).
Test Information
Reports In
Same day (6 hours)
Parameters
1
Requisites
Blood Sample
Sample Type
Blood
Measures
Serum creatinine level
Identifies
Kidney filtration function, GFR estimation
What is the Creatinine Test?
Serum Creatinine is the most commonly used kidney function marker. Creatinine is a waste product from muscle metabolism, filtered out entirely by the kidneys. When kidneys are not working properly, creatinine accumulates in the blood. Your creatinine level, combined with age, gender, and weight, is used to calculate eGFR (estimated Glomerular Filtration Rate) — the gold standard measure of kidney function.
Why Should You Take This Test?
Simple, reliable kidney function marker. eGFR derived from creatinine helps stage kidney disease and guide drug dosing.
Who Should Get Tested?
Diabetic Patients
Annual kidney screening is essential.
Hypertension Patients
BP-related kidney damage monitoring.
On Nephrotoxic Drugs
Medications that can harm kidneys (NSAIDs, aminoglycosides).
Elderly
Kidney function naturally declines with age.
Warning Signs — When Should You Get This Test?
Common Conditions Detected
Frequently Booked Together
Tests commonly ordered alongside Creatinine for a complete picture
BUN (Blood Urea)
BUN:Creatinine ratio helps differentiate causes
Electrolytes
Kidney dysfunction causes electrolyte imbalances
Urine Complete Analysis
Complementary kidney assessment
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