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Creatinine
MessagePerformed in Chemistry
Test Code
CREATGFR
Alias/See Also
Creatinine GFR
CPT Codes
82565
Preferred Specimen
Green Top LiHep, Plasma
WyMCC - SST
WyMCC - SST
Other Acceptable Specimens
Gold/SST or Red Top
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Drawn in outdated/expired, citrate, oxalate or
fluoride tube
Contaminated
Hemolyzed, icteric or lipemic
fluoride tube
Contaminated
Hemolyzed, icteric or lipemic
FDA Status
FDA Approved
Setup Schedule
Daily, Sunday through Saturday
Report Available
Less than 4 hours
Reference Range
Clinical Significance
Chronic kidney disease is a worldwide problem that carries a substantial risk for cardiovascular morbidity and death. Current
guidelines define chronic kidney disease as kidney damage or glomerular filtration rate (GRF) less than 60 mL/min per 1.73 m2
for
three months or more, regardless of cause. The assay of creatinine in serum or plasma is the most commonly used test to assess
renal function. Creatinine is a break-down product of creatine phosphate in muscle, and is usually produced at a fairly constant rate
by the body (depending on muscle mass). It is freely filtered by the glomeruli and, under normal conditions, is not re-absorbed by
the tubules to any appreciable extent. A small but significant amount is also actively secreted.
guidelines define chronic kidney disease as kidney damage or glomerular filtration rate (GRF) less than 60 mL/min per 1.73 m2
for
three months or more, regardless of cause. The assay of creatinine in serum or plasma is the most commonly used test to assess
renal function. Creatinine is a break-down product of creatine phosphate in muscle, and is usually produced at a fairly constant rate
by the body (depending on muscle mass). It is freely filtered by the glomeruli and, under normal conditions, is not re-absorbed by
the tubules to any appreciable extent. A small but significant amount is also actively secreted.
