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Laboratory Medicine

Test catalogue

Complete Blood Count (CBC)

Test Name

Complete Blood Count (CBC)

Lavender Tube Microtainer Tube Specimen Type / Requirements

Container Type = Lavender

Minimum Venous Volume (Lavender) = 1mL whole blood

Minimum volume (Pink Microtainer tube) = 250┬ÁL whole blood.

Specimen Handling

Collection Instructions: Collect sample in a lavender top and send to core lab. 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.

Stability: For CBC and DIFF specimens can be run within 24 hours if stored at room temperature.

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

Sample Rejection Criteria: Plasma, clotted sample, unlabeled or samples of non sufficient quantity.

Required Documentation

Turnaround Time (TAT)

STAT: 30 Mins
Routine: 4 hours

Test Utilization

Reference Value

See Reference Values Here

Test Code



Coulter/Impedance principle

Testing Location


Other Information

Last Updated: March 06, 2020