LIBBY LIBRARY · TOPIC
clotting tests
2 articles in this field-note collection.
von Willebrand factor antigen: normal range, low results
VWF antigen shows how much von Willebrand factor is in your blood: the normal range, the 2021 von Willebrand disease cutoffs, and why levels swing.
aPTT blood test: normal range, long and short results
aPTT times how fast your plasma clots. Here's the normal range, what a long or short result usually means, how to read it with PT, and when it's urgent.