A 25 year old male produces approximately 10mg of testosterone per day. When you’re using testosterone with an ester attached it lasts several days. Even testosterone propionate is active a good 5 days. Forget literature that says it’s out sooner because it’s not true. I have given long ester testosterone to an ex-girlfriend. It was a very bad idea. Even at low doses her clitoris grew and her voice changed. I would have your wife do 5mg test prop every other day to test the waters. I wouldn’t go higher then 10mg every other day. Optimally, get testosterone suspension or test base suspended in oil and do daily injections with 5mg. Use an insulin pin. If you get testosterone prop suspended in MCT oil it’ll flow through a 30 gauge pin. 5mg of test prop would only be 5 units on a 30 gauge 1cc 1/2” syringe. You could get 1/2cc and a shorter pin if you do subcutaneous injects but they often cause site swelling. I use a 30 gauge 1cc 1/2” pin for intramuscular injections daily in various locations: middle quad, outer hip, delts, lats, mid leg in between the quad and ham. I can vouch that testosterone propionate from Flash Labs flows through a 30 gauge insulin pin. I’ve actually used deca, NPP, masteron, test enan, sustanon, tren ace. They all went through a 30 gauge pin with Flash’s gear. It’s a blend of MCT oil and palm kernel oil. I don’t mean to push my sponsor but it’s the only gear I can verify from personal experience in terms of using a slin pin. No way will cotton seed oil, sesame seed oil, and most likely grape seed oil, go through a 30 gauge pin.