Table 4.

Alerts to predict an impeding adverse drug event using percent changed in the laboratory value

Ref.	Drug related hazardous condition for alert detection	Adverse drug event preventing	Criteria for prevention alert
Harinstein et al[38]	Platelet drop	Bleed	≥ 50% decrease in platelets between most recent and second most recent platelet count
Harinstein et al[38]	Platelet drop	Bleed	2 consecutive decreases in platelets with ≥ 25% difference between the third most recent and the most recent platelet count