Ive donated 17 times in the last 4 years both on off literally everything and never had an issue with my blood. AAS doesnt work that way. The blood isnt “bad “ or contaminated. The list of medications you sign off on will effect the blood, or disease like hiv or hepatitis. Nothing to worry about dude you’re way overthinking this. Donate the blood, continue to use. Get bloods pulled watch your numbers and donate again when the numbers say its time. Its really simple. Good luck