[Mercat]

Could they just test for level of testosterone and only those under a certain level can compete?

[lepton]

Could they just test for level of testosterone and only those under a certain level can compete?

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After they’ve already grown bigger stronger supporting structures? You don’t pop testosterone in the morning to improve performance for an afternoon event. You have it (or take it) long-term to build you up, then stopping taking it just takes away some of the maintenance.

[5th MEB]

The only test that would be accurate is a chromosome test.

XX = FEMALE

XY = MALE

It’s the only way to be sure.

[oldvirginian]

“Could they just test for level of testosterone and only those under a certain level can compete?”

From my very limited reading it won’t work.

Males are born to grow differently than girls; stronger, denser bones and musculature that begin showing as toddlers and accelerate with puberty.
Even with a male taking massive amounts of estrogen they still have that biological advantage.

As long as males keep their testicles they have a huge advantage with testosterone production.
In males 19 and up the testosterone level is 240-950 nanograms/decaliter
Females age 19 and range from 8-60 ng/dl.
Even when taking estrogen and testosterone blockers the level in trans(fake)women is much higher than the 8-60 level in real women.

There are also differences in how the brains of males and females differ in the production and use of serotonin and dopamine, neurotransmitters that effect learning, coordination and physical activity.

One study suggests that females have fewer receptors that are affected by neurotransmitters and this effects physical activity as well as why females are more likely to develop bi-polarism and face depression disorders.
The higher receptor count in males is thought to be a factor in males being more likely to develop Parkinsons.

If I’m wrong in any of this I don’t mind being corrected.