How much is 200mg of testosterone?

200 mg is a mass, equal to 0.2 grams.

How that translates to volume depends on the product’s concentration:
- If the injectable is 200 mg per mL (200 mg/mL), then 200 mg = 1 mL.
- If it’s 100 mg/mL, then 200 mg = 2 mL.
- If it’s 50 mg/mL, then 200 mg = 4 mL.
- If it’s a topical gel (for example 2% w/w), 200 mg would correspond to about 10 g of gel (since 2% gel has 20 mg testosterone per gram).

A rough molar amount: testosterone has a molecular weight of about 288.4 g/mol, so 200 mg is roughly 0.00069 moles (0.693 millimoles).

If you’re asking about price or dosing guidance, please specify the country and the exact product/formulation, and I can help with that too. If this is for medical use, confirm dosing with a healthcare provider.