Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  


Sunquest Test Code:
PORRU      Geisinger Epic Procedure Code: 84120.01         Geisinger Epic ID: 15132

Specimen type:
Random urine
Preferred collection container:
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 instructions:
Protect specimen from light. 
Transport temperature:
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.

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
Additional information:
Quest Diagnostics Nichols Inst-San Juan Capistrano
CPT code(s):
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.
High Performance Liquid Chromatography (HPLC)
Quest test code 36592
Porphyrins, fractionated, random urine
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.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Tuesday-Friday, Sunday afternoon    
Performed stat? No
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