H Score

Diagnose reactive hemophagocytic syndrome (HLH or MAS)


Used to quantify likelihood of a hemophagocytic syndrome such as Hemophagocytic Lymphohistiocytosis (HLH) or the Macrophage Activation Syndrome (MAS) given certain laboratory results and physical examination findings.


The H Score calculator is created by QxMD.

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1. Known underlying immunosuppression?

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HIV positive or receiving long‐term immunosuppressive therapy (i.e., glucocorticoids, cyclosporine, azathioprine).

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