Table 3. Diagnostic criteria for MAS .

Reference: [12]

MAS: macrophage activation syndrome; TG: triglyceride; AST: aspartate transaminase

MAS - diagnostic criteria

Fever AND

Ferritin > 684

Any two out of four of the following

Platelets ≤ 181 × 109/L

Fasting TG > 156 mg/dL

AST > 48 U/L

Fibrinogen ≤ 360 mg/dL