Printable Test Catalog - OU Medicine

METHODOLOGY: Spectrofluorometric
REFLEX TEST INFORMATION: If the total RBC porphyrin value is >80
mcg/dL, additional testing
(fractionation assays) will be
performed at an additional charge
CLINICAL USE: Aid in diagnosis of porphyrias
CPT: 84311
[PORQT] UR PORPHYRINS QUANT
SPECIMEN REQUIRED: Refrigerated aliquot of 24-hour urine
TUBE OR CONTAINER: Plastic urine container
SPECIAL HANDLING: Collect 24-hour urine in container "P" (no
preservative); refrigerate during collection;
Protect specimen from light
SPECIMEN VOLUME: 2 mL
MINIMUM VOLUME: 1.5 mL
TEST INCLUDES: Coproporphyrins, uroporphyrins, heptacarboxlyporphyrins,
pentacarboxylporphyrins,
hexacarboxylporphyrins
TEST AVAILABILITY: Daily
METHODOLOGY: High-pressure liquid chromatography (HPLC) with
fluorometric detection
CLINICAL USE: Evaluate porphyrias, including those involving
deficiencies of enzymes which are needed for heme
synthesis and chemical porphurias
CPT: 84120
[PORSTL] PORPHYRINS FECES
SPECIMEN REQUIRED: Frozen stool (random)
TUBE OR CONTAINER: Plastic container
SPECIAL HANDLING: Protect specimen from light
SPECIMEN VOLUME: 5 gram
MINIMUM VOLUME: 2 gram
TEST INCLUDES: Coproporphyrin and Protoporphyrin
TEST AVAILABILITY: Daily
TURNAROUND TIME: 3-10 days
REFERENCE RANGE: Coproporphyrin 0-45 nmol/g dry weight
Protoporphyrin 0-100 nmol/g dry weight
METHODOLOGY: High Performance Liquid Chromatography (HPLC)
CPT: 84126
[POSAC] POSACONAZOLE LEVEL
SPECIMEN REQUIRED: Frozen serum or plasma
TUBE OR CONTAINER: Red or Dark Green (heparin)
SPECIAL HANDLING: Separate serum/plasma from cells within 2
hours of collection; Do NOT collect specimen
in gel barrier tube
SPECIMEN VOLUME: 2 ml
MINIMUM VOLUME: 1 ml
TEST AVAILABILITY: Daily