Epitestosterone

[Thundercross]

HI. I am looking for all info i can get on epitestosterone.
Please point out online resources on it.
Thankx. Keep pumpin'

 

[gooey]

here

# Normal

1. Epitestosterone to Testosterone Ratio = 2-3 to 1

# Abnormal

1. Epitestosterone to Testosterone Ratio = 6-9 to 1
2. Conditions with abnormal ratio


Published: Journal of Analytical Toxicology, Volume 24, Number 2, March, pp.102-115

Evaluation of Testosterone/Epitestosterone Ratio Influential Factors as Determined in Doping Analysis
D.H. van de Kerkhof1, D. de Boer1,2, J.H.H. Thijssen1,3, and R.A.A. Maes1
1Utrecht Institute of Pharmaceutical Sciences (UIPS), Department of Human Toxicology, University of Utrecht, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands; 2Instituto Nacional do Desporto, Laboratório de Análises de Dopagem e Bioquímica, Av. Prof. Egas Moniz (Estádio Universitário), 1600 Lisboa, Portugal; and 3Department of Endocrinology, Academisch Ziekenhuis Utrecht, Heidelberglaan 100, P.O. Box 8550, 3508 GA Utrecht, The Netherlands

The ratio of the concentration of testosterone glucuronide to the concentration of epitestosterone glucuronide (T/E ratio) as determined in urine is the most frequently used method to prove testosterone abuse by athletes. A T/E ratio higher than 6 has been considered as proof of abuse in the past; however, cases of naturally occurring higher T/E ratios have been described. Since the introduction of the T/E ratio in doping analysis, the parameters that may or may not influence the T/E ratio, possibly leading to false-positive results, have been debated. To achieve more insight on the influencing circumstances, an overview is given to obtain an objective view on the merits of the urinary T/E ratio. Relevant analytical aspects of the T/E ratio, potential parameters of endogenous and exogenous origins, as well as some alternative methods to determine testosterone abuse, such as the urinary testosterone/luteinizing hormone ratio, gas chromatography– combustion–isotope-ratio mass spectrometry, hair analysis, and high-performance liquid chromatography–mass spectrometry, are discussed.


Epitestosterone
Epitestosterone is a biological form of testosterone that does not enhance performance. Drug tests for testosterone typically measure the ratio of testosterone to epitestosterone (T/E ratio). An athlete can inject epitestosterone, lower the T/E ratio and hide the use of testosterone. By itself, epitestosterone has no real harmful side effects.

 

[xcelbeyond]

Good info Gooey

Plus - - I don't believe adding a Epitestosterone to Testosterone to your blood test is "very" expensive. I believe when I had my last physical, the doc had it done on my blood test (we went over all the different things he was going to have the lab check).

 

[MikeS]

I dont think the epitest/test is expensive either. Its the one after that (if that shows a high ratio) that is expensive - the gas spectrometer which will show exactly what steroid was being used.