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Porphyrins, Fractionated, Urine

Item Value
Approval req'd? No
Available Stat? No
Test code PORFU
Test group Porphyrins
Performed by Quest
Sendout? Yes
Method HPLC
Collection Instructions IMPORTANT: Refrigerate container and protect from light (place in brown paper bag or wrap with aluminum foil) during and after collection.

Note: This assay does not include urinary porphobilinogen which, if desired, must be ordered separately.
Container type Brown 24 hour urine collection container

Click here for Urine Preservative Requirements
Amount to Collect Entire 24 hour urine output
Sample type 24 hour urine collection
Preferred volume 2 mL urine
Min. Volume 1 mL urine
UCSF Rejection Criteria Container not refrigerated or protected from light during collection.
Processing notes Refrigerate aliquot in a foil-wrapped vial and record the total volume of the collection on the request slip and the transport vial. Order Quest # 729X
Units µg/24 hours (mcg/24 hours)
Normal range
Tetracarboxylporphyrins (Coproporphyrins) ≤ 155 µg/d
Pentacarboxylporphyrins ≤ 4.7 µg/d
Hexacarboxylporphyrins ≤ 0.9 µg/d
Heptacarboxylporphyrins ≤ 6.8 µg/d
Octacarboxylporphyrins (Uroporphyrins) 3.3-29.5 µg/d
Total porphyrins 12-190 µg/d
Synonyms Porphyria
Turn around times Test run Monday-Friday. Turnaround time: 3-6 days.
Additional information To convert µg/d to nmol/d (SI units) multiply TetraCP by 1.53, PentaCP by 1.44, HexaCP by 1.36, HeptaCP by 1.28, OctaCP by 1.20. To convert mg/d of Porphobilinogen to µmol/d (SI units) multiply by 4.42.
CPT coding 84120-90
LOINC code 43116-3
Last Updated 3/24/2013 7:52:15 PM
Entry Number 762
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