Test Details

Mnemonic

UVMA

Ordering Code

1007138

CPT-4 Code(s)

84585, 82570

Specimen Information

Collect

24 hour urine. The bladder must be emptied at the time the collection is to begin, and this urine is discarded. Thereafter all urine must be collected until the end of the scheduled time. Collect urine with 25 mL of 6N HCl at start of collection to maintian pH between 1 and 3. Refrigerate urine during collection (critical). Mix the collection well before removing aliquot.

Specimen Preparation

Send 25.0 mL urine in a screw capped plastic urine container. Record total volume on container label.

Alternate Specimen

Alternate method of 24 hour collection WITH PRESERVATIVE: Refrigerate urine during collection (critical) and add 25.0 mL 6N HCl to the entire collection within 4 hours of collection completion. Mix collection well, and check pH to ensure pH is between 1 and 3. Send a 25.0 mL urine aliquot refrigerated in a screw-capped plastic urine container. Record total volume on container label.

Alternate method of 24 hours collection WITHOUT PRESERVATIVE: Collect 24 hours urine and keep refrigerated throughout collection. Mix well and send 25.0 mL urine refrigerated in a screw-capped plastic urine container. Record total volume on container label.

Minimum Volume

10.0 mL

Transport Temperature

Refrigerated

Rejection Criteria

Samples with pH <1

Stability

With preservative:
Room temperature: 10 days
Refrigerated: 14 days
Frozen: 1 year

Without preservative:
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 14 days

Methodology

High Performance Liquid Chromatography
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Reference Range

3-5 years: 1 - 2.6 mg/day
6-9 years: 2.0 - 3.2 mg/day
10-15 years: 2.3 - 5.2 mg/day
≥16 years: 1.8 - 6.7 mg/day

Creatinine:
Males: 1.0 - 2.0 g/24 hours
Females: 0.8 - 1.8 g/24 hours
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Performing Laboratory

Warde Medical Laboratory
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New York DOH Approval Status

Yes
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