Test directory: Creatinine

Ordering Code 157
Test Name Creatinine
Alias Creat
Creatinine with eGFR
Preferred Specimen Serum
Preferred Container SST (Gold)
Other Specimen/Container Serum in Plain (Red), Plasma in Lithium Heparin (Green-PST),
Plasma in Lithium Heparin (Dark Green-PP No Gel)
Optimum Volume 1 mL
Handling Instructions All specimen types must be centrifuged within 2 hours of collection. If no gel separation present in tube and testing is delayed, plasma/serum is aliquoted from cells within 2 hours of collection.
Transport Requirements Oahu: Refrigerated
Airline: Refrigerated
Specimen Stability Refrigerated: 7 Days
Frozen: 3 Months (Aliquot)
Frozen samples should be thawed only once.
Rejection Criteria Grossly hemolyzed, Insufficient quantity, Specimen older than stability limits
Avail. Stat YES
Analytic Time 1 Day
Methodology Modified Jaffe, Alkaline picrate-Kinetic

Reference range(s)

Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Creatinine ALL 0.6-1.3 0.6-1.3 mg/dL
eGFR CKD-EPI Cr 2021 ALL >=90* >=90* mL/min/1.73m(2)
eGFR CKD-EPI Cr 2021 M ALL >=90* mL/min/1.73m(2)
eGFR CKD-EPI Cr 2021 F ALL >=90* mL/min/1.73m(2)