what does 7.5-750 mallinckro mean
No. Mallinckrodt's hydrocodone contains the same two drugs as Watson's Lortab--it looks like a generic version of the brand-name product--so it'll test the same. Let me guess: You went to the doctor, got a prescription for Lortab and had it filled, and you live in a state that allows pharmacists to substitute generics for brand-name drugs. When you got to the drugstore, the pharmacist asked you if you wanted to same some money. You did, and got the Mallinckrodt product instead. And basically, you're fine.