WATSON-SCHWARTZ URINE
General Information
HLAB/HOL Code: WSCH
UPHSM LIS Test #: 920
Schedule: Daily
Testing Time: 1 day
Testing Lab: UP Health System-Marquette
UPHSM LIS Test #: 920
Schedule: Daily
Testing Time: 1 day
Testing Lab: UP Health System-Marquette
Specimen Info
Only 1 specimen type required, unless otherwise specified
Volume: 10-15ml random
Temperature: Frozen
Tube Type: Urine
Collection Info:
Plastic urine cup or Urine Vacutainer collection kit. Sample must be fresh.
FREEZE if not delivered to the lab immediately. Protect specimen from light.
Temperature: Frozen
Tube Type: Urine
Collection Info:
Plastic urine cup or Urine Vacutainer collection kit. Sample must be fresh.
FREEZE if not delivered to the lab immediately. Protect specimen from light.
Specimen Acceptability
Freeze urine if not delivered to the lab immediately. Do not centrifuge or use urine preservatives.
PROTECT SPECIMEN FROM LIGHT.
PROTECT SPECIMEN FROM LIGHT.
Clinical Utilities
The Watson-Schwartz Test detects porphobilinogen and urobilinogen and differentiates them by means of their solubility.
NOTE: Porphobilinogen is susceptible to degradation at high temperatures, at ph <5.0, and on prolonged exposure to light. Specimen should be protected from light and sent to lab immediately for processing.
NOTE: Porphobilinogen is susceptible to degradation at high temperatures, at ph <5.0, and on prolonged exposure to light. Specimen should be protected from light and sent to lab immediately for processing.
CPT Codes
81003, 84106
* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
Reference Range
Urobilinogen: 0.2-1.0 mg/dL
Porphobilinogen: NEG
Porphobilinogen: NEG
Component Info
Name: POPRPHOBILINOGEN
Method:
CPT Code: 84106
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Method:
CPT Code: 84106
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Name: UROBILINOGEN
Method:
CPT Code: 81003
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Comp Units:
Method:
CPT Code: 81003
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Comp Units:
