"Free T is really just a picture in time. It's a useful metric, but so is how you feel. 170 is high. Male range is 23-82. A spike here and there isn't much of a concern---it could just be your body adjusting---It's over the long term where high T causes problems (unwanted conversion to estrogen, liver damage, etc.) I'd keep an eye on that T level and note how you're feeling. Your body could level it out on its own, or you may need to adjust your T administration.Note: .6cc is meaningless without knowing the concentration of T. 100mg/ml?" - Trans Man