Porphyrins, Total, Plasma

Test Code
10290

CPT Codes
82542<br /> **This code is for Non-New York State clients only. For New York patient testing, use code 10288.**

Preferred Specimen
2 mL plasma collected in a sodium heparin (green-top) tube - protect from light

Minimum Volume
0.4 mL

Other Acceptable Specimens
Plasma collected in: EDTA (lavender-top) tube • Serum collected in: Red-top tube (no gel)

Instructions
Collect blood sample with foil-wrapped (green-top) tube. Separate plasma by centrifugation. Avoid hemolysis. Remove plasma to a light-protected tube. Freeze immediately after separation.

Transport Container
Transport tube - protected from light

Transport Temperature
Frozen

Specimen Stability
Room temperature: 8 hours
Refrigerated: 8 hours
Frozen: 90 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Not protected from light • Hemolysis • Serum Separator Tube (SST®)

Methodology
High Performance Liquid Chromatography (HPLC)

Setup Schedule
Set up: Tues, Thurs p.m.; Report available: 5 days

Reference Range
1.0-5.6 mcg/L

Clinical Significance
To diagnose patients with chronic renal failure who may be suspected of primary or secondary porphyria.

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.