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Table 2 Results of immunologic studya of natural killer cells (NK cells) and sCD163 levels

From: Hemophagocytic lymphohistiocytosis with immunotherapy: brief review and case report

A. Natural Killer (NK) Cell Function

E:T Ratio

Result

Cytotoxicity

Reference Range

50:1

5%

Low

(> = 20)

25:1

2%

Low

(> = 10)

12:1

2%

Low

(> = 5)

6:1

1%

 

(> = 1)

NK Lytic Units

0.1

Low

(> = 2.6)

CD16/56% positive

4%

Low

(7–31)

Interpretation: Decreased NK cell function.

B. sCD163 Level

6384 ng/mL

 

(387–1785 ng/mL)

  1. aImmunologic study was conducted in Diagnostic Immunology Lab, Cincinnati Children’s Hospital