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Mayo Clinic Laboratories

Test Code LAB2018 White Blood Cell Count with Manual Differential

Specimen Requirement

2.5 - 5.0 mL EDTA whole blood

Specimen Minimum Volume

0.5 mL EDTA whole blood

Specimen Stability

WBC Count:

  • 8 hours room temperature
  • 48 hours refrigerated (4° C)

Manual Differential:

  • Slide can be prepared up to 4 hours from collection of EDTA whole blood.

Testing Schedule

Daily

Reference Range

 

Parameter

Male

Female

8-15 Yr

2-7 Yr

30 days-1Yr

7-29 days

0-6 days

Unit

WBC

3.6-11.0

3.6-11.0

4.5-13.5

5.5-15.5

6.0-17.5

5.0-21.0

13.0-38.0

K/ul

Neutrophil

54-74

54-74

43-63

32-52

22-42

35-55

58-78

%

Lymph

22-42

22-42

29-49

40-60

51-71

31-51

14-34

%

Monocyte

2-8

2-8

2-8

2-8

2-8

0-17

0-17

%

Eosinophil

0-6

0-6

0-6

0-6

0-6

0-6

0-6

%

Basophil

0-2

0-2

0-2

0-2

0-2

0-2

0-2

%

IG%

0-0.42

0-0.42

0-0.42

0-0.42

0-0.42

0-0.42

0-0.42

%

Neutrophil

1.9-8.1

1.9-8.1

1.9-8.5

1.76-8.06

1.3-7.35

1.75-11.55

7.5-29.6

K/ul

Lymph

0.8-4.6

0.8-4.6

1.3-6.6

2.2-9.3

3.0-12.4

1.55-10.7

1.8-12.9

K/ul

Monocyte

0.1-0.9

0.1-0.9

0.1-1.1

0.1-1.24

0.1-1.4

0.0-3.57

0.0-6.46

K/ul

Eosinophil

0.0-0.8

0.0-0.8

0.0-0.8

0.0-0.93

0.0-1.05

0.0-1.3

0.0-2.28

K/ul

Basophil

0.0-0.2

0.0-0.2

0.0-0.3

0.0-0.3

0.0-0.35

0.0-0.4

0.0-0.76

K/ul

IG

0-0.03

0-0.03

0-0.03

0-0.03

0-0.03

0-0.03

0-0.03

K/ul

 

Testing Department

Hematology/Coagulation

Method

Flowcytometry using semiconductor laser

Manual

CPT Code

85048

85007

Additional Testing Locations

This test is also performed daily at the following Altru Clinics:

  • Crookston
  • Devils Lake
  • East Grand Forks
  • Family Medicine Residency
  • Red Lake Falls
  • Altru Professional Center Laboratory

Please contact appropriate lab location for specific test information, as methodology varies by site.