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Test Code LAB141 Uric Acid, Plasma or Serum

Reporting Title

Uric Acid

Methodology

Roche Diagnostics, Uricase-RMH, GMC, DH, DMH, MGH, MH, PMH, SH

Useful in diagnosis and treatment of metabolic and renal disorders, including renal failure, gout, leukemia, starvation, or other wasting conditions.

 

VWH Lab:

URIC reagent, when used in conjunction with SYNCHRON LX® System(s), UniCel® DxC 860i System(s) and SYNCHRON® Systems Multi Calibrator, is intended for the quantitative determination of Uric Acid concentration in human serum, plasma or urine.

Performing Laboratory

OhioHealth Laboratory Services- RMH, GMC, DH, DMH, MGH, MH, SH, PMH and VWH Core Laboratories

Specimen Requirements

Collection Instructions:

1. Serum and Plasma gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.

 

Submit only 1 of the following specimens:

 

Preferred:

Serum

Draw blood in a gold-top serum gel tube(s). Spin down and send 1 mL of serum refrigerated.
Note:

1. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.

2. Indicate serum on request form.

3. Label specimen appropriately (serum).

 

Alternate (Preferred for VWH Lab): 

Plasma

Draw blood in a mint green-top (heparin) gel tube(s). Spin down and send 1 mL of heparinized plasma refrigerated.

Note: 

1. Indicate plasma on request form.

2. Label specimen appropriately (plasma).

VWH Lab: 

3. Tubes of blood are to be kept closed at all times and in a vertical position. It is recommended that the serum or plasma be physically separated from contact with cells within two hours from the time of collection.

4. Separated serum or plasma should not remain at room temperature longer than 8 hours. If assays are not completed within 8 hours, serum or plasma should be stored at +2°C to +8°C for up to 48 hrs. 

 

Roche Specimen Stability Information

Specimen Type Temperature Time
Serum or plasma Refrigerated 5 days
  Ambient  3 days
  Frozen  6 months

 

Specimen Transport Temperature

Refrigerate: OK

Ambient: OK

Frozen: OK

Reference Values

Males

0-31 days:  1.2-3.9 mg/dL

32 days-12 years:  2.0-5.5 mg/dL

≥13 years:  3.4-8.5 mg/dL

Females

0-31 days:  1.0-4.6 mg/dL

32 days-12 years:  2.0-5.5 mg/dL

≥13 years:  2.4-7.0 mg/dL

Note:  Alpha-Methyldopa, desferoxamine, and calcium-dobesilate (eg, Dexium®) at therapeutic levels can falsely lower results.

 

VWH Lab Only:

Serum or Plasma (Male): 4.4 – 7.6 mg/dL

Serum or Plasma (Female): 2.3 – 6.6 mg/dL

 

Day(s) Test Set Up

Monday through Sunday; Continuously

Test Classification and CPT Coding

84550