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Porphobilinogen (PBG), Urine 24 Hour or Random Sample

Mnemonic:    [U Porphob]
Name:    Porphobilinogen (PBG), Urine 24 Hour or Random Sample
Specimen:     *****PROTECT FROM LIGHT***** 8 mL aliquot from a 24 hour or random urine collection. A 24-hour urine collection is preferred, but a random sample can be tested. Refrigerate during collection.
Minimum Spec:    3.5 mL
Transport Temp:    FREEZE
Spec Stability:    Stable 4 days refrigerated.
Ref Lab/Code:    ARUP 0080260
  Method:    Ion Exchange Chromatography/Spectrometry
Note:    Replaces the older Watson-Schwartz test.
Processing Info:    Submit frozen in 2 amber tubes. Record total volume and collection time on the transport tubes. *****PROTECT FROM LIGHT*****

Collection instructions for a 24 hour urine sample