The Serum Creatinine Test is a blood test that measures creatinine, a waste product produced by normal muscle metabolism. Healthy kidneys filter creatinine from the blood and remove it through urine.
Creatinine levels, along with estimated glomerular filtration rate (eGFR) and other clinical findings, help healthcare professionals assess kidney function.
What Does the Test Help Assess?
- Kidney Function: Helps evaluate how well the kidneys filter waste from the blood.
- Kidney Disease Monitoring: Supports monitoring of known kidney conditions.
- Treatment Monitoring: May be used to assess kidney function during certain treatments.
- Further Investigation: Abnormal results may prompt additional blood or urine tests.
Sample Requirements
- Sample type: Blood, typically serum.
- Fasting: Usually not required unless specifically instructed.
- Preparation: Follow your healthcare professional’s instructions and inform them about medicines and supplements you take.
Understanding Your Results
Increased serum creatinine may occur when kidney filtration is reduced, but it can also be influenced by muscle mass, dehydration, diet, and certain medicines. A normal creatinine result does not exclude every kidney problem.
Your doctor may interpret creatinine alongside eGFR, urine albumin, medical history, and other test results.
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