Porphobilinogen, Qualitative

Label Mnemonic:	PBG
Epic code:	LAB664
Order form:	Laboratory Requisition
Supply order:	Supply Order Form
Billing:	Billing Policies
CPT code:	84106

Specimen(s):

Urine, Random

Collection Medium:

Yellow top round bottom tube (no additive)

Alternate Collection Media:

Call laboratory for additional acceptable specimen collection containers.

Minimum:

1 mL random urine

Testing Schedule:

0700-2200 Daily.
For additional services contact Clinical Pathology Resident on-call at pager #3404.

Turn Around Time:

3 hours (upon receipt in laboratory)

Reference Range:

Negative

Comments:

Screen uses the Hoesch test and can be done on random specimen. If screening results are positive and if clinically indicated, quantitative fractionation of porphyrins and porphobilinogen can be determined by the mail-out test Porphyrins & Porphobilinogen (PBG).

Methodology:

Colorimetric

Instructions:

Random urine collection in dark plastic container or wrap yellow round bottom tube in foil to shield from light, no preservative.

Sample Processing:

Protect specimen from light.
Submit in leak-proof container.
Label transport tube with two patient identifiers, date and time of collection.

Sample Storage:

Refrigerate.

Transport Instructions:

Place labeled specimen into zip-lock type biohazard bag; seal bag.
Place completed requisition into outside pocket of bag.
Transport in cooler with refrigerated coolant packs.

See also:
Porphyrins & Porphobilinogen, Urine (24 hr or random)

See Additional Information:
Urine Tests Requiring no Preservatives
Urine Tests Requiring Preservatives, Refrigeration or Special Containers