COVID-19 information for patients and families

To help protect our people, patients and communities, we are screening everyone who enters our main hospital buildings. Some of our entrances may be closed or have reduced access.

Please check our COVID-19 information page for more updates before coming to our sites.

Text size: a a a

Laboratory Medicine

Test catalogue


Test Name


Lavender Tube Specimen Type / Requirements

Container Type = 1 LavenderS

Minimum Volume = 2 ml Plasma (EDTA)

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

Specimen Handling

Collection Instructions: Collect fasting specimen. Pre-chill tube at 4°C before drawing the specimen. Draw into the pre-chilled tube, and then chill tube in wet ice for 10 minutes. Write your initials, date and time of collection on the collection label.

Laboratory Staff Instructions: Centrifuge in a refrigerated centrifuge or in chilled centrifuge cup. Immediately after centrifugation, remove plasma, place in a plastic transport vial and freeze.

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

Stability: Stable Frozen for 90 days

Transportation: Send sample to core lab as soon as possible.

Required Documentation

Turnaround Time (TAT)

7 Days

Test Utilization

Reference Value

≤6 hours: 100-650 pg/mL
1-2 days: 70-450 pg/mL
1-2 days: 70-450 pg/mL
2-4 days: 100-650 pg/mL
4-14 days: declining gradually to adult range
>14 days: >14 d: ≤80 (Based on 95% confidence limits)

Test code




Testing Location

Referred Out – ON, Canada (ROICL02)

Other Information

Last Updated: January 20, 2020