Porphobilinogen Screen
Test Mnemonic
UPBG
CPT Codes
- 84106 - QTY (1)
Aliases
- PBG
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 10 mL | Urine, random | Clean container | Refrigerated | First morning void. Protect from light. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | Stable protected and unprotected from light for 24 hours. |
| Frozen | 1 month |
| Refrigerated | 1 week |
Days Performed
Wed
Turnaround Time
1 - 8 days
Methodology
| Name | Description |
|---|---|
| Spectrophotometry, Watson-Schwartz |
Reference Range
Special Info
Instruct patient to deliver urine ASAP upon collection.
Clinical Info
Rule out porphyrias