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  1. #1
    bartman314's Avatar
    bartman314 is offline Productive Member
    Join Date
    Sep 2013

    are there two types of "free Testosterone" tests?

    i've been on trt for ~1.25 years and have had 4 tests before and during trt. two of those tests had a range of 7.2-24.0 and the other two 46-224 pg/ml. does anyone know the difference between these two tests? is one bio available and the other free for example?

  2. #2
    Lifted1's Avatar
    Lifted1 is offline Member
    Join Date
    Nov 2012
    Nor Cal
    those just look like different measurement ranges for the same test...46~224 pg/ml converts to 4.6~22.4 ng/dl which isnt far off from the 7.2~24.0

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