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Test Code Hemogram Hemogram

Additional Codes

Cerner

NextGen

Hemogram

Hemogram

Methodology

Sysmex XN: The analyzer performs hematology analysis according to the hydrodynamic focusing (DC Detection), flow cytometry method (semiconductor laser), and SLS-hemoglobin methods.

Patient Preparation

None

Collection Instructions

Do not place samples on a mechanical rocker.

Specimen Requirements

Preferred Volume

12 x 75 mm tube EDTA-2K or EDTA-3K Lavender filled to capacity

Minimum Volume

  • 1mL of whole blood in 12 x 75 mm tube EDTA-2K or EDTA-3K Lavender
  • 160 μL of whole blood in microtube EDTA-2K or EDTA-3K Lavender

Container

  • 12 x 75 mm tube EDTA-2K or EDTA-3K Lavender

  • Microtube EDTA-2K or EDTA-3K Lavender

Stability

  • Sample stability at room temperature is 24 hours.
  • Stored at 2-8oC, EDTA blood samples with normal results may be analyzed up to 48 hours

Rejection Criteria

  • Clotted samples or those containing clots, fibrin strands, or platelet clumps.  All specimens will be checked visually for obvious clots prior to sampling by the analyzer.
  • Grossly hemolyzed samples.
  • Samples drawn above an IV line.

Result Reporting and Reference Values

Reported Parameters

  • WBC
  • RBC
  • Hgb
  • Hct
  • MCV
  • MCH
  • MCHC
  • RDW-CV
  • PLT

Reference Ranges

Parameter

Units

Sex

Age

Reference Range

WBC

x103/µL

M

0D-15D

5

--

30

15D-30D

5

--

20

30D-1Y

5

--

17.5

1Y-10Y

4

--

13.5

10Y-15Y

4.5

--

13

15Y-150Y

4.8

--

10.5

F

0D-15D

5

--

30

15D-30D

5

--

20

30D-1Y

5

--

17.5

1Y-10Y

4.5

--

13.5

10Y-15Y

4.5

--

13

15Y-150Y

4

--

11

 

RBC

x106/µL

All

0D-30D

3.8

--

6.4

30D-3Y

3.1

--

5.1

3Y-10Y

3.8

--

5.1

10Y-12Y

3.9

--

5.2

M

12Y-15Y

4.2

--

5.5

15Y-150Y

4.4

--

5.8

F

12Y-15Y

4

--

5.4

15Y-150Y

3.9

--

5.2

 

HGB

gm/dL

All

0D-15D

12

--

23

15D-30D

10

--

20

30D-60D

11

--

14.5

60D-120D

10

--

14.5

120D-150D

10.5

--

14.5

150D-180D

10.8

--

14.5

M

180D-3Y

11

--

14.5

3Y-4Y

11.4

--

14.5

4Y-8Y

11.5

--

14.5

8Y-12Y

11.8

--

14.5

12Y-15Y

13

--

15

15Y-150Y

13.5

--

17.5

F

180D-2Y

11

--

14.5

2Y-3Y

11.4

--

14.5

3Y-7Y

11.5

--

14.5

7Y-11Y

11.8

--

14.5

11Y-12Y

12

--

14.5

12Y-120Y

11.7

--

15.7

 

HCT

vol%

All

0D-15D

36

--

64

15D-30D

31

--

55

M

30D-60D

31

--

56

F

30

--

56

All

60D-90D

28

--

49

90D-1Y

30

--

49

1Y-7Y

30

--

40

7Y-15Y

33

--

44

M

15Y-150Y

40

--

52

F

35

--

46

 

MCV

fL

All

0D-3D

95

--

121

3D-7D

88

--

126

7D-14D

86

--

124

14D-30D

85

--

123

30D-60D

77

--

115

60D-6Months

74

--

108

6Months-2Y

70

--

86

2Y-6Y

75

--

87

6Y-12Y

77

 

95

12Y-18Y

78

 

98

M

18Y-150Y

81

--

100

F

18Y-150Y

82

--

102

 

MCH

pcg

M

0D-30D

32

--

41

30D-60D

32

--

40

60D-90D

29

--

35

90D-1Y

27

--

30

1Y-4Y

24

--

30

4Y-5Y

24

--

32

5Y-15Y

25

--

34

15Y-150Y

26

--

34

F

0D-30D

32

--

41

30D-60D

32

--

40

60D-90D

29

--

35

90D-1Y

27

--

30

1Y-4Y

24

--

30

4Y-5Y

24

--

32

5Y-15Y

25

--

34

15Y-120Y

25.5

--

34

120Y-150Y

26

--

34

 

MCHC

gm/dL

M

0D-30D

30

--

36

30D-180D

32

--

36

180D-15Y

30

--

35

15Y-150Y

32

--

36

F

0D-30D

30

--

36

30D-180D

32

--

36

180D-15Y

30

--

36

15Y-120Y

31

--

35

120Y-150Y

32

--

36

 

RDW-CV

%

All

0D-150Y

11

--

15

 

PLT

103/µL

All

0D-30D

100

--

300

30D-150Y

150

--

450

 

Critical Ranges

Parameter

Units

Sex

Age

Critical

WBC

103/µL

All

0D- 150Y

<2

>50

HGB

gm/dL

All

0D-15D

<6

>24

0D-150Y

<6

>22

HCT

vol%

All

0D-15D

<18

>65

15D-150Y

<18

>58

PLT

103/µL

All

0D- 150Y

<30

>1000

Reflex Testing

  • A fluorescent platelet may be performed when:
    • Red cell fragments, microcytic RBC's or white cell cytoplasmic fragments may interfere with automated platelet counts.
    • If >10 megakaryocytes/100 WBC are seen on Slide examination
  • Slide examination occurs when:
    • Instrument parameter flags indicate abnormal cell populations, requiring a technologist to review slides to verify cell identity and abnormal morphology.
    • WBC count of <2,000/µL or >25,000/µL
    • RBC count <2.5 x 106 cells/µL or >7.5 x 106 cells/µL
    • HGB <7gm/dL or > 18 gm/dL for 12Years -150Years; >24gm/dL for 0-15 days; and >21 gm/dL for 15Days -30Days
    • MCV <70 fL or > 108 fL for 60 Days -150 Years; >131 fL for 0D-30Days; and >110 fL for 30D-60Days
    • MCHC >37.5%
    • RDW-CV >20%
    • PLT <50,000/ µL or >700,000/ µL
    • Abnormal red blood cell quantitations.

  • Abnormal Heme Smear Path Review will be performed for:
    • Unexplained Hgb <7 gm/dL if accompanied by abnormal RBC morphology or low or high MCV.
    • Any bizarre cells
    • MCV > 110 fL
    • MCH < 2 pcg or > 37 pcg
    • MCHC >37 gm/dL
    • RDW >22%
    • PLT <50,000/ µL or > 1,000,000/ µL (first time only).

Limitations

  • Delta check: Hgb change of > 2 gm/dL without explanation requires a rerun or redrawn specimen.
  • Red cell fragments, microcytic RBC's or white cell cytoplasmic fragments may interfere with automated platelet counts.  A fluorescent platelet may be performed to avoid this interference.
  • WBC's greater than 100,000/µL may cause turbidity and falsely increase the hemoglobin, RBC and HCT values.
  • Giant platelets and clumped platelets may falsely elevate the WBC count and falsely decrease the platelet count. 
  • Abnormal paraproteins found in blood from patients with Multiple Myeloma can falsely increase the HGB.
  • Severely icteric samples may falsely elevate the HGB value and related indices
  • Megakaryocytes may falsely increase WBC counts on automated hematology analyzers.

Useful For

Examination of the numerical and/or morphological findings of the complete blood count by the physician are useful in the diagnosis of disease states such as anemias, leukemias, allergic reactions, viral, bacterial, and parasitic infections.