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 # |
Citric Acid, Serum
Test CodeCIT-S
Alias/See Also
37233
CPT Codes
82507
Preferred Specimen
2 mL serum
Minimum Volume
1 mL
Other Acceptable Specimens
Plasma collected in: EDTA (lavender-top) tube, sodium heparin (green-top) tube, or PPT potassium EDTA (white-top) tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 8 hours
Refrigerated: 17 days
Frozen: 17 days
Refrigerated: 17 days
Frozen: 17 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature
Methodology
Enzymatic • Spectrophotometry (SP)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Tues; Report available: 1-8 days after receipt at the performing laboratory. Add three (3) days for transport.
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 Institute-San Juan Capistrano, CA |
33608 Ortega Highway |
San Juan Capistrano, CA 92675-2042 |
Last Updated: June 22, 2023