Compare this test’s laboratory options
Creatinine
Access Labcorp Draw · Access Medical Labs · Quest Diagnostics3 test optionsFrom $3.53
Creatinine
Access Labcorp Draw · Access Medical Labs · Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
Creatinine
This test is a serum measurement of the level of creatinine in the blood, a waste product produced by the normal breakdown of muscle tissue. This test is useful for assessing and monitoring kidney function and diagnosing kidney disease. Elevated blood creatinine levels can indicate reduced kidney function, suggesting that the kidneys are not effectively filtering waste. This test is often used alongside other kidney function tests to assess the severity of kidney impairment, adjust medication dosages, or monitor the progression of chronic kidney disease.
What patients is this test right for?This test is typically ordered if there's a concern about kidney function or to monitor the effectiveness of renal dialysis.
What type of sample is required for this test?1 mL serum.
Sodium heparin (green-top) tube • Lithium heparin (green-top) tube.
Test ResourcesFor more information, please consult your healthcare provider.
Additional test information
Creatinine – this test is a serum measurement of the level of creatinine in the blood, a waste product produced by the normal breakdown of muscle tissue. This test is useful for assessing and monitoring kidney function and diagnosing kidney disease. Elevated blood creatinine levels can indicate reduced kidney function, suggesting that the kidneys are not effectively filtering waste. This test is often used alongside other kidney function tests to assess the severity of kidney impairment, adjust medication dosages, or monitor the progression of chronic kidney disease.
Collection and processing
- Sample type: Serum
- Fasting: No
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
Creatinine
This test is a serum measurement of the level of creatinine in the blood, a waste product produced by the normal breakdown of muscle tissue. This test is useful for assessing and monitoring kidney function and diagnosing kidney disease. Elevated blood creatinine levels can indicate reduced kidney function, suggesting that the kidneys are not effectively filtering waste. This test is often used alongside other kidney function tests to assess the severity of kidney impairment, adjust medication dosages, or monitor the progression of chronic kidney disease.
What patients is this test right for?This test is typically ordered if there's a concern about kidney function or to monitor the effectiveness of renal dialysis.
What type of sample is required for this test?1 mL serum.
Sodium heparin (green-top) tube • Lithium heparin (green-top) tube.
Test ResourcesFor more information, please consult your healthcare provider.
Additional details
Creatinine - this test is a serum measurement of the level of creatinine in the blood, a waste product produced by the normal breakdown of muscle tissue. This test is useful for assessing and monitoring kidney function and diagnosing kidney disease. Elevated blood creatinine levels can indicate reduced kidney function, suggesting that the kidneys are not effectively filtering waste. This test is often used alongside other kidney function tests to assess the severity of kidney impairment, adjust medication dosages, or monitor the progression of chronic kidney disease.
Highlighted health areas
- Kidney
- Metabolic function
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- Creatinine
- Estimated Glomerular Filtration Rate