top of page

Creatinine

3010

cpt

normal turn-around time

assays included

specimen type

minimum required

CREA

82565

24 hours

Crea

Serum or Plasma

1 mL of serum or plasma

collection instructions

  • Collect blood in a serum separator tube (SST) or a lithium heparin tube.

  • Allow the blood to clot at room temperature for 30 minutes if using an SST.

  • Centrifuge and separate serum or plasma from cells within 2 hours of collection.

  • Transport the specimen at 2-8°C if not tested within 2 hours.

collection instructions

  • Hemolysis: Red blood cell destruction can affect test results.

  • Clotted Specimen: Plasma specimens must be anticoagulated.

  • Improper Labeling: Specimen must be labeled with at least two patient identifiers.

  • Insufficient Quantity: Volume less than 1 mL may not be sufficient for all tests.

  • Delayed Transportation: Specimens must be processed and tested within the specified time frame to ensure accuracy.

  • Serum or plasma must be separated from cells within 2 hours and kept refrigerated if there is any delay in testing.

  • Lipemia: Excessive fat in the blood can interfere with certain test results

clinical significance

The Creatinine test measures the concentration of creatinine in the blood, which is a waste product generated from muscle metabolism. Creatinine levels in the blood can indicate how well the kidneys are functioning. Elevated levels may indicate impaired kidney function or kidney disease. It is a key marker used in assessing kidney health and monitoring renal function.

bottom of page