Creatinine (1007)

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Category:

CPT Code:

82565

Test Type: 1.0 mL Serum or Plasma Kit Based
Stability Time:

Stability

Refrigerated:  7 days

Reference Range:

Male

  • Low: <0.67
  • Normal: 0.67-1.17 mg/dL
  • High: >1.17 mg/dL

Female

  • Low: <0.51
  • Normal: 0.51-0.95 mg/dL
  • High: >0.95 mg/dL

Overview:

Creatinine is the break-down product of creatine phosphate in muscle and is usually produced at a fairly constant rate. Creatinine is filtered by the kidneys and is not re-absorbed to any significant extent.

Methodology

Enzymatic

  • Elevated levels of creatinine may indicate kidney dysfunction.
  • Creatinine is used to evaluate renal function and in monitoring renal dialysis.

Collection Details:

Collection Instructions:

Preferred Specimen

1.0 mL serum (0.5 mL minimum) collected in serum separator tube (SST/Tiger Top)

Alternate Specimen

1.0 mL EDTA plasma (0.5 mL minimum) collected in plasma separator tube (Pearl Top)

Transport Temperature

Refrigerated (ship on frozen cold packs)