Test Details
Mnemonic
UCR24
Ordering Code
3401017
CPT-4 Code(s)
82495, 82570 (81050 may be added at an additional charge for volume measurement)
Specimen Information
Collect
24 hour urine in acid washed container
Specimen Preparation
Send 2.0 mL of urine in an acid washed screw capped plastic container. Record total volume on container label. Call lab for collection container.
Alternate Specimen
Urine collected in a metal-free container.
Minimum Volume
0.5 mL
Transport Temperature
Refrigerated
Rejection Criteria
Random urine
Stability
Room temperature: 4 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Methodology
Atomic Absorption (AA)
Reference Range
Chromium <2.0 ng/mL
Chromium/Creatinine Ratio <5.0 mcg/g cr
Creatinine, 24 Hour Urine
<3 Years Not established
3-8 Years 0.10-0.80 g/24 h
9-12 Years 0.20-1.40 g/24 h
13-17 Years 0.40-1.90 g/24 h
>17 Years 0.50-2.15 g/24 h
Chromium/Creatinine Ratio <5.0 mcg/g cr
Creatinine, 24 Hour Urine
<3 Years Not established
3-8 Years 0.10-0.80 g/24 h
9-12 Years 0.20-1.40 g/24 h
13-17 Years 0.40-1.90 g/24 h
>17 Years 0.50-2.15 g/24 h
Performing Laboratory
Quest
New York DOH Approval Status
Yes