Porphyrins 24 Hr Urine PORPH24

Synonyms

Allscripts (AEHR) Order Name

Porphyrins, Urine 24 Hour Quantitative

Sunrise Clinical Manager (SCM) Order Name

Porphyrins, Urine 24 Hour Quantitative

Clinical Info

Evaluate porphyrias, including those involving deficiencies of enzymes that are needed for heme synthesis and chemical porphyrias.

Specimen Type

Urine

Container

24hr Ur No Light

Collection Instructions

Container/Tube: 24-Hour urine container.- Light Protected
Specimen: 2 mL (1.5 mL min) . Collect with 5 grams of sodium carbonate or no preservative, if properly refrigerated and light protected
Transport Temperature: Refrigerated urine- Indicate TV on container.
Stability: Unstable Room Temperature
Refrigerated: 7 days Frozen: 30 days
Protect specimen from light during collection and transport

Collection Instruct patient to void at 8 AM (or 8 PM) and discard the specimen. Then collect all the urine, including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM [or 8 PM] the following day). Specimen must be kept refrigerated

Transport Instructions

Refrigerated urine- Indicate TV on container.

Specimen Stability

Unstable Room Temperature
Refrigerated: 7 days Frozen: 30 days
Protect specimen from light during collection and transport

Collection Instruct patient to void at 8 AM (or 8 PM) and discard the specimen. Then collect all the

Methodology

High-pressure liquid chromatography (HPLC) with fluorometric detection

Days Performed

TAT 4 - 7 days

Performing Laboratory

LabCorp Burlington, NC

CPT

84120 - porphyrins

LOINC Code: 43116-3

PDM

5902651

Result Interpretation

Coproporphyrin (CP) I: 0−24 μg/24 hours
Coproporphyrin (CP) III: 0−74 μg/24 hours
Heptacarboxylporphyrins (7-CP): 0−4 μg/24 hours
Hexacarboxylporphyrins (6-CP): 0−1 μg/24 hours
Pentacarboxylporphyrins (5-CP): 0−4 μg/24 hours
Uroporphyrins (UP): 0−24 μg/24 hours

Forms

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