Table 1.

Summary of the laboratory investigations of all the cases

Laboratory investigation	Unit	Reference value	Case 1	Case 2	Case 3	Case 4
WBC	Cells/mm3	4,000–11,000	13,000	17,000	14,000	16,000
CRP	mg/mL	0–5	87	102	68	112
D dimers	ng/mL	0–200	810	1,318	984	1,118
Ferritin	ng/mL	30–400	1,245	865	1,311	754
LDH	U/L	140–280	564	653	486	560
Random blood sugar	mg/dL	120–140	119	112	108	102
Blood culture			Negative	Negative	Negative	Negative
Urine culture			Negative	Negative	Negative	Negative
Urine toxicology			Negative	Negative	Negative	Negative
HIV antibodies			Negative	Negative	Negative	Negative
Rapid plasma reagin			Negative	Negative	Negative	Negative