Can testosterone injections of 1.5 ml every three weeks cause a blood clot? 38 and never had a clot before and 2 months after increased dose got dvt.

Possibly: Testosterone replacement, especially when given by injection can cause increases in red blood counts. This can then lead to increased clot formation. You should have a CBC done to look at your blood count. At age 38, i would also see a specialist to make sure you require testosterone replacement.

1.5 ml is a volume.: It does not tell us the dose of testosterone. That said, it is possible that taking a high dose of testosterone can lead to DVT, or blood clot. Testosterone supplementation raises the concentration of red blood cells in the circulation. CBC's must be monitored to make sure the red cell count, or hematocrit, does not become to high. Hope this helps!