On androgel 1% & highest test is 367ng/dl. For a 38yr think it is still low. Will androgel 1.62% increasek t? Would like to be around 500ng/dl.

Yes, but... Switching to a different form or concentration may raise the levels some, but it may not make you feel any better. Typically values for 300-500 feel the same for most people. You really need to talk to your doctor about what you feel you're missing out on to see if they would be fixed with raising the levels.