From: Intracranial hemorrhage in an infant leads to the diagnosis and treatment of severe hemophilia B: a case report
Normal range
Patient’s levels
Interpretation
PT ratio
˂1.1 [16]
1.2
Slightly high
PTT ratio
1.5–2.5 [17]
3.94
High
PT mixing ratio
1:1
PTT mixing
1.11
After mixing, the PTT ratio normalized
Factor VIII
50–150% [2]
135%
Normal
Factor IX
˂1%
Extremely low
Hemoglobin (mean)
12 g/dL [18]
7.5 g/dL
Low
