Porphyrins, Urine Quant

Test Code: TD_4384

CPT Code(s): 84120

$49

Test Details

Alternative Name(s)

Fractionated porphyrins
Porphyrins,fractionated
Urine porphyrins, quantitative

Test Includes

Uroporphyrin
Heptacarboxylate
Coproporphyrin I
Coproporphyrin Iii
Porphyrins Interpretation
Creatinine, Urine, Conc.
Creatinine, Urine, 24 Hr
Hours Of Collection
Total Urine Volume

Methodology

Quantitative high perfomance liquid chromatography (HPLC)

Rejection Criteria

Room temperature samples
Body fluid other than urine

Reference Range(s)

Uroporphyrins: 0-4 umol/mol creatinine
Heptacarboxylporphyrins: 0-2 umol/mol creatinine
Coproporphyrin i: 0-6 umol/mol creatinine
Coproporphyrin iii: 0-14 umol/mol creatinine

Specimen Requirements

Preferred Specimen

Urine collection container

Minimum Volume

2 mL urine

Sample Stability

Unacceptable room temperature
4 days refrigerated
1 month frozen

Transport Temperature

Frozen

Collection Instructions

24 hour urine refrigerated during collection. Record total
volume. Transfer 4 mL from a well-mixed 24 hr collection
to a plastic aliquot tube. Freeze. Protect sample from
light during collection, storage, and transport.
When multiple tests are ordered, submit separate sample for
this test.

Alternative Specimen

Random sample acceptable but reference ranges are not available.