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Lab Test Dictionary

Porphyrins, Fractionated, Plasma (5519)


High Performance Liquid Chromatography (HPLC)

Specimen Type

Serum or Plasma

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID


Lab Test Days

Tuesday and Thursday; P.M.

Standard TAT

5 Days

Collection Information

Specimen Required

1-4 mL Blood

Container Type

Green (Sodium Heparin)

Collection Instructions

Plasma collected in an EDTA (lavender-top) or serum collected in a (red-top) tube (no gel) is also acceptable. Protect specimen from light.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: 8 Hours; Refrigerated: 8 Hours; Frozen: 90 Days

Rejection Criteria

Hemolysis; Received room temp; Received refrigerated; Not protected from light; Serum separator tube (SST)

Test Volume Required

2 mL Serum or Plasma

Minimum Test Volume

0.4 mL Serum or Plasma

Processing Instructions

Avoid hemolysis. Protect serum or plasma from light and freeze immediately.

Included Tests

Uroporphyrin, Heptacarboxyporphyrin, Hexacarboxyporphyrin, Pentacarboxyprophyrin, Coproporphyrin, Protoporphyrin, and Total Porphyrins

CPT Codes