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Laboratory Medicine

Test catalogue

Porphyrins: Quantitation (Total Porphyrins)

Test Name

Porphyrins: Quantitation (Total Porphyrins)

Lavender Tube Specimen Type / Requirements

Container Type = Lavender

Minimum Venous Volume = 2 mL plasma

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Avoid gel separator tubes, EDTA or Na Heparin Plasma are acceptable. Protect specimen from light at all times during collection and processing. Sample should be well mixed at time of collection to prevent platelet clumping. Write your initials, date and time of collection on the collection label.

Special Instructions: Freeze immediately after separation. Specimen must be labelled inside and outside light-protecting wrap.

Stability: Stable at room temperature and frigerated for 8 hours and frozen for 90 days.

Transportation: Transport at room temperature within 1 hour of collection.

Sample Rejection Criteria: Grossly hemolyzed samples, Unlabeled or Not Sufficient Quantity samples will be rejected.

Required Documentation

Turnaround Time (TAT)

1 day

Test Utilization

Reference Value

See report

Test Code




Testing Location

Referred Out – ON, Canada (ROICL02)

Other Information

Last Updated: June 06, 2019