Test Name

Creatinine Random
urine

Test Code

2619

Unit

mg/dL

Station

Chemistry

Synonym Name/Abbreviation

Urine creatinine, random

CPT Code

82570

Performing Facility

American Medical Labs, Herzliya
Pituah

Analyzer

Roche cobas 6000

Test Method

Kinetic Jaffe’, rate blanked, compensated, traceable to
IDMS

AML Preferred Tube

Routine urinalysis leakproof tube or container, BD urine
transport tube, or sterile urine cup.

Sample collection

 Collect urine in
a screw-cup plastic container or transfer it to a random urine transport
tube. Screw the lid on securely. Transport the specimen promptly to the
laboratory.

Storage Instructions

Maintain specimen at room temperature, refrigerate, or
freeze.
2 days at 15 to 25 �C
6 days at 2‑8 �C
6 months at -15 to -25 �C

Min. Volume

Random urine or 10 mL of well mixed urine from measured 24
hour collection.

Comments

No special preparation
needed

Turn-Around-Time

One day

Intended Use

Renal function test when used as part of creatinine
clearance; crude marker for completeness of 24-hour urine collections when
collected for other purposes

Limitations

Ingestion of meat may increase creatinine values of urine
collections as well as serum creatinine values. Drugs interfering with
tubular creatinine secretion: cimetidine, trimethoprim, and
probenecid.

Patient Preparation

No special preparation
needed

Reasons for Rejection

Collection times not indicated; improper
labeling

Adult Reference Ranges

30 to 220
mg/dL