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Test Code ZG014 Uric Acid, 24 Hour, Urine

Additional Codes

Ordering MnemonicMayo Test ID
URICURURCU

Reporting Name

Uric Acid, U

Useful For

Assessment and management of patients with kidney stones, particularly uric acid stones

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Urine


Specimen Required


Container/Tube: Plastic, 5-mL tube (T465)

Specimen Volume: 5 mL

Collection Instructions:

1. Add 10 g of boric acid as preservative at start of collection.

2. Collect urine for 24 hours.

3. Mix well before taking 5-mL aliquot.

Additional Information:

1. 24-Hour volume is required.
2. See Urine Preservatives in Special Instructions for multiple collections.


Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  14 days

Reference Values

Diet-dependent: <750 mg/24 hours

The reference value is for a 24-hour collection. Specimens collected for other than a 24-hour time period are reported in unit of mg/dL for which reference values are not established.

Day(s) and Time(s) Performed

Monday through Sunday; Continuously

Test Classification

This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

84560

LOINC Code Information

Test ID Test Order Name Order LOINC Value
URCU Uric Acid, U In Process

 

Result ID Test Result Name Result LOINC Value
UACID Uric Acid, U 3087-4
TM29 Collection Duration 13362-9
VL27 Urine Volume 3167-4
UACN1 Uric Acid Concentration 21587-1

Method Name

Uricase

Urine Preservative Collection Options

Ambient

No

Refrigerated

Yes

Frozen

Yes

6N HCl

No

50% Acetic Acid

No

Na2CO3

Yes

Toluene

Yes

6N HNO3

No

Boric Acid

Preferred

Thymol

Yes