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Epitestosterone, or isotestosterone, also known as 17α-testosterone or as androst-4-en-17α-ol-3-one, is an endogenous steroid and an epimer of the androgen sex hormone testosterone. It is a weak competitive antagonist of the androgen receptor (AR) and a potent 5α-reductase inhibitor .
Testosterone levels in males and females ; Total testosterone Stage Age range Male Female Values SI units Values SI units ; Infant: Premature (26–28 weeks) 59–125 ng/dL: 2.047–4.337 nmol/L
The free androgen index is intended to give a guide to the free testosterone level, but it is not very accurate (especially in males — see endocrine society commentary below). Consequently, there are no universally agreed 'normal ranges', and levels slightly above or below quoted laboratory reference ranges may not be clinically significant.
There are variations in the genetic material for this protein that have different effects. ... 4-fold and decrease free testosterone ... 1.8: 2.44: 0.73: 42.1: 54.7 ...
C change is a waterproof and windproof temperature adaptive material developed and produced by Schoeller Textiles. [1]The material contains a membrane layer which is set to a predetermined temperature range.
Schematic block diagram of an adaptive design for a clinical trial [1] In an adaptive design of a clinical trial, the parameters and conduct of the trial for a candidate drug or vaccine may be changed based on an interim analysis. [2] [1] [3] Adaptive design typically involves advanced statistics to interpret a clinical trial endpoint. [1]
Testosterone can be taken by a variety of different routes of administration. [2] [3] These include oral, buccal, sublingual, intranasal, transdermal (gels, creams, patches, solutions), vaginal (creams, gels, suppositories), rectal (suppositories), by intramuscular or subcutaneous injection (in oil solutions or aqueous suspensions), and as a subcutaneous implant.
[1] [2] In midshipman fish, 11-ketotestosterone is not present in females or Type II Males — Type II Males reach sexual maturation later, are less territorial, and have higher testosterone than Type I Males. In mammals, 11-ketotestosterone has similar potency to testosterone as an androgen, and has been identified as an important adrenal ...