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Lab Manual for Moffitt-Long and Mount Zion

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Creatinine, Body Fluid

Item Value
Approval req'd? No
Available Stat? Yes
Test code CRB
Test group Creatinine
Performed by Parnassus Chemistry
In House Availability Test available 24 hours per day 7 days per week
Method Spectrophotometric, kinetic (alkaline picrate,Jaffe) assay on Beckman DXC 600/800 analyzers. Calibration traceable to isotope dilution mass spec (IDMS) standardization

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Collection Instructions Specimen label must contain the date the sample was collected and the legible name of the person who collected the sample.
Container type Red top or clean container
Amount to Collect 5 mL fluid
Sample type Body Fluid
Preferred volume 1 mL fluid
Min. Volume 0.2 mL fluid
Units mg/dL
Normal range None established. If urine leakage into a body cavity has occurred, the concentration of creatinine in the body fluid may be within the concentration range of creatinine found in urine. Random urine creatinine concentrations are typically between 80 mg/dL to 150 mg/dL and can range from approximately 20 mg/dL to 300 mg/dL (see Barr, DB et al. Environmental Health Perspectives 113:192-200, 2005).
Stability Room temperature 8 hours, refrigerated 2 days, frozen at -20C 1 week
Turn around times STAT 1 hour, Routine 4 hours
LOINC code 12190-5
Last Updated 3/24/2013 7:39:45 PM
Entry Number 264
Lab Procedure Link Click here for Procedure

If you have additional questions regarding this test, please call: 415-353-1667

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