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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Uric Acid
Test Code905
CPT Codes
84550
Preferred Specimen
1 mL serum
Patient Preparation
The assay manufacturer Beckman Coulter advises: "N-Acetyl Cysteine (NAC), when administered in therapeutic concentrations (for the treatment of acetaminophen overdose), has been...determined to interfere with assays for...cholesterol, uric acid" where "NAC interference may lead to falsely low results." According to Beckman Coulter, the NAC interference should be insignificant by 12 hours after completion of the initial loading dose of an IV infusion treatment regimen consisting of an initial loading dose of 150 mg/kg administered over 1 hour, a second dose of 50 mg/kg administered over 4 hours and a third dose of 100 mg/kg administered over 16 hours.
Minimum Volume
0.5 mL
Other Acceptable Specimens
Sodium heparin (green-top) tube • Lithium heparin (green-top) tube
Instructions
Note: N-acetyl-p-benzoquinone imine (NAPQI) (metabolite of acetaminophen) will generate erroneously low results in samples for patients that have taken toxic doses of acetaminophen.
Transport Container
Serum separator tube (SST)
Transport Temperature
Room temperature
Specimen Stability
Serum and plasma
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 28 days
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Anticoagulants other than heparin
Methodology
Spectrophotometry (SP)
Setup Schedule
Mon-sun
Report Available
1 day
Reference Range
Male (mg/dL) |
Female (mg/dL) |
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<1 Month |
1.5-3.9 |
1.5-4.6 | |||
1-11 Months | 1.5-5.6 | 1.5-5.4 | |||
1-3 Years | 2.1-5.6 | 1.8-5.0 | |||
4-6 Years | 1.8-5.5 | 2.0-5.1 | |||
7-9 Years | 1.8-5.4 | 1.8-5.5 | |||
10-12 Years | 2.2-5.8 | 2.5-5.9 | |||
13-15 Years | 3.1-7.0 | 2.2-6.4 | |||
16-18 Years | 2.1-7.6 | 2.4-6.6 | |||
≥19 Years | 4.0-8.0 | 2.5-7.0 |
Clinical Significance
Serum uric acid measurements are useful in the diagnosis and treatment of numerous renal and metabolic disorders, including renal failure, gout, leukemia, psoriasis, starvation or other wasting conditions, and in patients receiving cytotoxic drugs.
Performing Laboratory
Quest Diagnostics-Lenexa |
10101 Renner Blvd |
Lenexa , KS 66219-9752 |