91342      Porphyrins, Urine Fractionated
Specimen:
  Collect: Timed Urine

Also Acceptable
Random Urine  
  Submit: 5 mL (Min:4 mL) Aliquot(s) Timed Urine in Sterile Specimen Container. Submit Frozen.

Also Acceptable
5 mL (Min:4 mL) Random Urine in Sterile Specimen Container. Submit Frozen.  
  Special Handling: 24 HR Urine Collection Preferred
Keep Specimen Refrigerated During Collection
Protect from Light
State Collection Time
State Volume
Evaluation of neurologic and/or psychiatric symptoms associated with acute porphyrias such as acute intermittent porphyria (AIP) requires urine porphobilinogen (PBG) testing. (IP Test #91182) 
  Rejection Criteria: Specimen not protected from light 
  Stability: Ambient: Unacceptable; Refrigerated: 4 Day(s); Frozen: 1 Month(s); Incubated: Unacceptable 
Methodology: High performance liquid chromatography (HPLC) 
Performed: Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday 
Reported: 2-5 Day(s) 
CPT Codes:
81050 - Volume Measurement 84120 - Porphyrins, Urine Qant
Interpretive Data: Please see report for interpretive data.
Components:
93454 - UROPORPHYRIN93455 - HEPTACARBOXYLATE
93456 - COPROPORPHYRIN93008 - CREAT, UR
93009 - CREAT, UR 93518 - TIME
93388 - URINE VOLUME93457 - INTERPRETATION