Depends on whats in the syringe. Typically it will be 10ml BA water added to 10K iu to get 1000iu/ml
So your Rx seems to be 600iu/week.
And 250iu would then be 0.25 ml or "25" on an insulin syringe; exceeding your Rx and you will run out.
Half life of hCG does not support injecting once a week.
You should be using #31 5/16" 0.5ml [50iu] insulin syringes, about $14 per 100 at USA Walmart or Sam's Club, their ReLion house brand, no Rx required in must jurisdictions.
You can inject T with #29 1/2" 0.5ml [50iu] from same sources.
Please read these stickies:
- advice for new guys
- protocol for injections
You should not be creating new threads where we do not have context of your case. I had to look to see if you had been pointed to the stickies before.