top of page
Creatinine, Serum or Plasma
Ordering Recommendation
Screening test to evaluate kidney function.
Methodology
Quantitative Enzymatic Assay
Performed
Mon-Sat
Reported
Within 24 Hours
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation:
Collect:
Plasma separator tube or serum separator tube.
Specimen Preparation:
Allow serum tube to clot completely at room temperature. Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to a standard transport tube. (Min: 0.2 mL)
Storage/Transport Temperature:
Refrigerated.
Unacceptable Conditions:
Specimens obtained through catheters used to infuse hyperalimentation fluid. Specimens with potassium oxalate/sodium fluoride, citrate, or EDTA as anticoagulants.
Remarks:
Stability:
After separation from cells: Ambient: 1 week; Refrigerated: 1 week; Frozen: 3 months
Reference Interval
By Report
Interpretive Data
Note
Assay interference (negative) may be observed when high concentrations of N-acetylcysteine (NAC) are present. Negative interference has also been reported with NAPQI (an acetaminophen metabolite) but only with concentrations at or above those expected during acetaminophen overdose.
CPT Code
82565
Components
Component Test Code
Component Chart Name
LOINC
0020025
Creatinine, Serum or Plasma
2160-0
3004293
UH EGFR
Aliases
Blood Creatinine
Serum Creatinine
bottom of page