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*URIC ACID, BLOOD

Mnemonic

URIC

Synonym

Purines

Specimen Collection Requirements

Collect

Serum or Plasma, one 5.0 mL gold (SST), 7.0 mL red or 3.0 mL mint green (lithium heparin, PST) top tube

View image for Supply Item Number - 101235 or 101192

Handling

Allow serum to clot completely at room temperature (minimum: SST - 30 minutes and red top tubes - 60 minutes). Preferably, separate serum or plasma from cells before transport.

Preferred Volume

1.0 mL

Minimum Volume

0.25 mL Serum/Plasma, (Whole Blood 0.60 mL minimum draw)

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed specimens

Stability

AFTER SEPARATION FROM CELLS: Ambient (18-26°C): 3 days; Refrigerated (2-8°C): 7 days; Frozen (at or below -20°C): 6 months

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Colorimetry (Uricase)

Reference Values

Reference Values

Comments

Assay interference (negative) may be observed when high concentrations of N-acetylcysteine (NAC) are present.

Venipuncture immediately after or during the administration of Metamizole (Dipyrone) may lead to falsely low results for uric acid. Venipuncture should be performed prior to administration of Metamizole.

CPT Codes

84550

Last Updated: Thursday, November 9, 2017 01:15:07 PM


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