In vitro- plasmaproteinbindingen for ambrisentan var gennemsnitligt 98, 8% og uafhængig af koncentrationen i intervallet 0, 2 - 20 mikrogram/ ml.
The in vitro plasma protein binding of ambrisentan was, on average, 98.8% and independent of concentration over the range of 0.2 – 20 microgram/ ml.