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Geisinger Medical Laboratories Test Catalog
PORPHYRINS, FRACTIONATED, QUANTITATIVE, RANDOM UR |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB2880 Geisinger Epic ID: 15132 | |
SPECIMEN COLLECTION |
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Specimen type: |
Random urine | |
Preferred collection container: |
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Specimen required: |
5 mL aliquot urine; minimum 2 mL. Protect aliquot from light. | |
Special notes: |
Collect without preservative. Refrigerate collection. Wrap specimen in aluminum foil to protect from light. | |
| SPECIMEN PROCESSING |
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Specimen processing instructions: |
Protect specimen from light. | |
Transport temperature: |
Refrigerated. | |
Specimen stability: |
Room Temperature: Unacceptable. Refrigerated: 7 days. Frozen: 30 days. | |
Rejection criteria: |
Samples received at room temperature; samples not protected from light; samples with a pH less than 4 are unacceptable. | |
TEST DETAILS |
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Reference interval: |
Adult Reference Ranges: Uroporphyrin I: 3.1-18.2 mcg/g creatinine Uroporphyrin III: =4.8 mcg/g creatinine Heptacarboxyporphyrin: =2.9 mcg/g creatinine Hexacarboxyporphyrin: =5.4 mcg/g creatinine Pentacarboxyporphyrin: =3.5 mcg/g creatinine Coproporphyrin I: 5.6-28.6 mcg/g creatinine Coproporphyrin III: 4.1-76.4 mcg/g creatinine Total Porphyrins: 23.3-132.4 mcg/g creatinine |
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Additional information: |
Quest Diagnostics Nichols Inst-San Juan Capistrano | |
CPT code(s): |
84120 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Test includes: |
Coproporphyrin, Pentacarboxylporphyrin, Hexacarboxylporphyrin, Heptacarboxylporphyrin, Uroporphyrin. Random Urine test includes Coproporphyrin and Uroporphyrin. | |
Methodology: |
High Performance Liquid Chromatography (HPLC) |
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Synonyms: |
Quest test code 36592, PORRU Porphyrins, fractionated, random urine
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Clinical significance: |
Porphyria is a group of distinct disorders, characterized by the abnormal accumulation of porphyrins or porphyrin precursors. Porphyrin fractionation of urine is useful in diagnosing porphyrin cutanea tarda, hereditary coproporphyria, and variegate porphyria. | |