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Laboratory Medicine

Test catalogue

C3, C4 Compliment

Test Name

C3, C4 Compliment

Gold Tube Specimen Type / Requirements

Container Type = 1 Gold Top (SST)

Minimum Volume = 2 ml serum

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

Specimen Handling

Collection Instructions: Collect sample in gold top (SST) tube. Write your initials, date and time of collection on the collection label.

Special Instructions: Specimen must be labelled properly. Sperate as soon as possible and send refrigrated

Rejection Criteria: Grossly hemolyzed, lipemic, Unlabeled or Not Sufficient Quantity samples will be rejected. Avoid repeat freeze/Thaw cycles.

Stability: Stable refrigerated at 2-8°C for 14 days and frozen at or below -20°C for more than 14 days.

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

Required Documentation

Turnaround Time (TAT)

24 Hrs

Test Utilization

Reference Value


Newborn to age 5 days: 0.39-1.56 g/L

Day6 to Adult: 0.90-1.80 g/L


Newborn to age 5 days: 0.05-0.33 g/L

Day 6 to Adult: 0.10-0.40 g/L

Test Code

C3X, C4X



Testing Location

Referred Out – ON, Canada (ROSJ03)

Other Information

Last Updated: June 06, 2019