score is 0-3, HIT is unlikely
4–5 intermediate probability
6–8  it highly likely. 

Int: antistoffen
high score alternative drug while more sensitive and specific tests for HIT are performed
low score can safely continue receiving heparin

low score had a negative predictive value of 0.998, while an intermediate score had a positive predictive value of 0.14 and a high score a positive predictive value of 0.64; intermediate and high scores therefore warrant further investigation