White blood cell count

Alphabetical Test listing

White blood cell count-514

Test name:

Test number:

514

Excellian order number:

85048.3

Abbreviation:

WBC

Specimen type:

EDTA whole blood

Collection container:

Lavender (EDTA), 4mL

If the patient has platelet clumping issues in EDTA, a Lt blue Sodium citrate (NaCit) tube must be collected in addition to the Lavender (EDTA), 4mL tube.

Volume:

5.0 mL

Minimum volume:

3.0 mL

Collection instructions:

Immediately after collection, mix tube thoroughly by gentle inversion, 8 - 10 times, to prevent clotting
If the patient has platelet clumping issues in EDTA, a Lt blue Sodium citrate (NaCit) tube must be collected in addition to the Lavender (EDTA), 4mL tube.

Transport container:

Lavender (EDTA), 4mL

Transport and stability:

Refrigerated (preferred) - 48 hours

Ambient (OK) - 24 hours

Reason for rejection:

Improper label (unlabeled or mislabeled)
Clotted specimen
Improper anticoagulant or ratio
Hemolysis
Delay in transport
Improper storage/transport temperature

Performing lab:

AHL - Hematology: H

Days set up:

Daily

TAT:

1 day

Method:

Sysmex

Reference ranges:

Age	Range (10³/mm³)
0 - 3 days	9.0 - 35.0
4 - 9 days	5.0 - 21.0
10 - 14 days	5.0 - 20.0
15 - 30 days	5.0 - 19.5
1 - 6 months	6.0 - 17.5
7 - 24 months	6.0 - 17.0
25 - 60 months	5.5 - 15.5
5 - 8 years	5.0 - 14.5
9 - 12 years	4.5 - 13.5
13 - 18 years	4.5 - 13.0
>18 years	4.5 - 11.0

Results that require action (critical):

Age	Low (10³/mm³)	High (10³/mm³)
0 - 28 days	<5.0	>35.0
>28 days	<2.0	>50.0

CPT codes:

85048

Subject to medical necessity (Y/N):

Yes

LCD/NCD:

Medical necessity

Date created:

11/30/2001

Revised date:

07/13/2018

Review date:

01/12/2024