Citric Acid, Serum [37233X]

Test Code
129672

CPT Codes
82507

Preferred Specimen
2 mL serum

Minimum Volume
1 mL

Transport Container
Plastic screw-cap vial

Transport Temperature
Refrigerated (cold packs)

Specimen Stability
Room temperature: 8 hours
Refrigerated: 18 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature

Methodology
Enzymatic • Spectrophotometry (SP)

Setup Schedule
Set up: Tues a.m.; Report available: 2 days

Reference Range
1.7-3.7 mg/dL

Clinical Significance

Citrate binds to calcium and inhibits kidney stone formation. Thus, low concentrations of citrate may lead to kidney stone formation. This is the most important risk factor for kidney stone formation in children. The treatment of calcium stones involves increasing urinary citrate excretion.



Performing Laboratory
Quest Diagnostics Nichols Inst  San Juan Capistrano
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.