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Porphyrins Screen, 24 hr Urine

Test ID: PORPHS U
Test
Specimen
Performance / Interpretation
Interface / Setup

Test

Method

Spectrophotometry

Report Includes

Creatinine; Porphyrin Screen

Specimens

Urine (24 hr)

Clinical Utility

Quantitation will be performed and billed (see separate listing) when the screen is positive.

Test Location

The Ottawa Hospital General Campus, 501 Smyth Road, Ottawa ON K1H 8L6

Test Version

26-Jun-2021

Specimen

Specimens

Urine (24 hr)

Sample Volume

20 mL

Collection & Handling

Collection Instructions

Collect 24 hour urine with 5 g sodium carbonate. Final pH should be 7 to 10. Keep cool during collection and protect from light.

Handling Information

Store and submit specimen protected from light.

Additional Information

Specimen aliquot must be labelled inside and outside light-protecting wrap. Provided volume (in litres) and collection date. This collection is not suitable forALA/PBG testing.

Rejection Criteria

Specimen Not protected from light

Test Version

26-Jun-2021

Performance / Interpretation

Method

Spectrophotometry

Turnaround Time

6 days

Results

Name Units Reference Range Conversion Factor
Creatinine mmol/d
  • Male, ≥18 y: 7.1 - 17.7
  • Female, ≥18 y: 5.3 - 15.9
  • Creatinine reference values are not available for individuals ≤17 y
Porphyrin Screen Qualitative Test
  • Normal

Test Location

The Ottawa Hospital General Campus, 501 Smyth Road, Ottawa ON K1H 8L6

Test Version

26-Jun-2021

Interface / Setup

HL7 Interface Codes

Order Code Result Codes Units
PORPHS U 20251Creatinine 24h Urine Porphyrin Screen mmol/d
20252Porphyrin Screen - 24h Urine

Test Version

26-Jun-2021