Question

which of the following blood tests measures how long it takes for a clot to form?
a erythrocyte sedimentation rate
b culture and sensitivity
c hematocrit
d pro - time

Explanation:

The pro - time (prothrombin time) measures how long it takes for a clot to form. Erythrocyte sedimentation rate measures inflammation, culture and sensitivity tests identify bacteria and their antibiotic susceptibility, and hematocrit measures the proportion of red blood cells in blood.

Answer:

D. pro - time