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Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

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CREATININE, URINE

Item Value
Available Stat? No
Test code UCRE
Performed by? Chemistry
Sendout? no
Price range $
In House Availability 7 days
Principle The Siemens ADVIA 1800 assay is an enzymatic creatininase method. The calibration is traceable to SRM967 and correlated with the NIST LC-IDMS method.
Interpretation Urinary creatinine is necessary in the determination of creatinine clearance as a measure of renal tubular function. Urinary creatinine may be decreased in polymyositis and muscular dystrophy (urine creatine is increased). Some drugs may alter urine creatinine.
Amount to Collect 5 mL
Collection Instructions Urine: Refrigerate urine during collection.
Sample type Urine
Normal range 0.8 - 2.0 g/24 hr (7.1 - 17.7 mmol/24 hr)
Stability Stored at 4°C, stable 4 days; frozen, 6 months.
Additional information INDICATIONS: Assessment of glomerular function.
CPT coding 82570
Last Updated 6/1/2015 2:50:27 PM
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