There is no overlap between female and male testosterone levels , unless that female athlete is so gravely ill which would mean they had a tumour and would not be competing in elite sports events.
Please stop spreading misinformation!
TESTOSTERONE LEVEL CHART - NORMAL FEMALE RANGE / PCOS RANGE / NORMAL MALE RANGE
This is the chart was made using information from the Handelsman et al 2018 paper below.
The 'Caster Semenya' line refers to what the IOC had specified that Semenya and others needed to suppress their testosterone levels down to, resulting in Semenya trying to overturn this at CAS.
Semenya was noted in that CAS case to have the difference in sex development categorised as 5-ARD and had testosterone levels of around 21 nmol/L.
The Hubbard line was the testosterone level that males with transgender identities had to suppress to for the 2020 Tokyo Olympics.
This is tweet where you can find the chart.
https://x.com/rorybowman/status/1819232725175620084
This is the study
Circulating Testosterone as the Hormonal Basis of Sex Differences in Athletic Performance
David J Handelsman, Angelica L Hirschberg, Stephane Bermon
Published: 13 July 2018
https://academic.oup.com/edrv/article/39/5/803/5052770?login=false