I’ve been on trt 4 years and always got 10ml vial for my T. I went to get refill yesterday and it was a new pharmacist. He gave me 5, 1 ml vials. I’m currently on 1.3 cc split over 3 pins weekly. He said the reasoning for smaller vials was that T cyp , after 28 days of breaking the seal on vial that bacteria can accrue and is an infection risk. I’d never heard this before but he said it with a study recently done.