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Laboratory Medicine

Test catalogue


Test Name


Gold Tube Specimen Type / Requirements

Container Type = 1 Gold Top Tube (SST)

Minimum Volume = 3 mL serum

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

Specimen Handling

Collection Instructions: Ensure both sample and requisition are labelled properly. To assess anaphylaxis, collect specimen between 15-180 minutes after suspected anaphylactic event. To assess systemic mastocytosis or mast cell activation syndrome, collect the specimen at any time. Write your initials, date and time of collection on the collection label.

Laboratory Staff Instructions Separate as soon as possible. Store and send frozen. Avoid repeated freeze/thaw cycles.

Rejection Criteria: Multiple freeze/thaw unacceptable, grossly hemolyzed, or lipemic, Unlabeled or Not Sufficient Quantity Samples will be rejected.

Stability: Stable refrigerated for 7 days and frozen for 6 months.

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

Required Documentation

Turnaround Time (TAT)

5 Days

Test Utilization

Reference Value

< 3.8 - 11.4 µg/L

Test Code




Testing Location

Referred Out – ON, Canada (ROICL02)

Other Information

Last Updated: June 06, 2019