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Test Directory

Test Directory Porphyrins, Total, Plasma

Porphyrins, Total, Plasma

Test Summary

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

Aliases

Specimen Collection

Special Instructions

N/A

Preferred Specimen

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

Minimum Volume

0.6 mL

Instructions

Light protection is required; collect blood sample with foil-wrapped tube. Separate plasma or serum specimens by centrifugation. Avoid hemolysis. Remove 2 mL plasma or serum to a light-protected tube.
Freeze immediately after separation and ship frozen samples on dry ice.

Patient Preparation

N/A

Storage

Transport tube - protected from light

Transport Temperature

Frozen

Specimen Stability

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

Limitations

N/A

Other Acceptable Specimens

Plasma collected in an EDTA (lavender-top) tube • Serum collected in a red-top tube (no gel)

Unacceptable Specimens

Not protected from light • Hemolysis • Serum separator tube (SST®)

Order Code

PPORPH

EPIC (Premier) Code

LAB5486

Includes

N/A

CPT Code

82542

Billing Code

670432

CPT Statement

Methodology

High Performance Liquid Chromatography (HPLC)

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.

Physician Attestation of Informed Consent

N/A

Testing Laboratory

Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano CA, 92675

Department

Reference Testing

Reference Range

1.0-5.6 mcg/L

Setup Schedule / Expected Turnaround Time

Tuesday, Thursday; Report available: 5 - 10 days