If I drink coffee before giving blood, will recipients get a buzz?

Dear Science: I gave blood recently after drinking (many cups of) coffee and can’t help but wonder – will any of the recipients of my caffeinated blood feel a caffeine jolt???
A: We hope you’re not exceeding the maximum recommendation of five cups of coffee a day, but something about your choice of punctuation suggests otherwise. Just remember: A serving of coffee contains about 100 mg of caffeine. Consuming more than 500 or 600 mg a day can make you nervous, irritable, twitchy