Test Name

WBC, Only

Specimen Type & Acceptability

EDTA Whole Blood
2 days refrigerated

General Use

Helps diagnose infections, inflammatory process, leukemia, immune disorders and other diseases.

CPT Code(s)


Special Instructions

Immediately invert 10-15 times after collection to mix with anticoagulant and Send Entire tube to Laboratory.

Container/Tube Type


3 mL Min. vol. = 1 mL

Suggested Tube Types


Typical Volume

Gold Top Serum Separator Tube (SST)

⋜ 5 mL

Tiger Top Serum Separator Tube (SST)
^For larger volume tests

> 5 mL

Red Top Tube (No additive)

⋜ 5 mL

EDTA Whole Blood

3 mL

3.2 % Sodium Citrate Whole Blood

2.7 mL

Lithium Heparin Plasma Separator Tube

⋜ 5 mL