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Letrozole and checking estrogen levels

Breast Cancer | Last Active: Aug 8, 2024 | Replies (93)
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@windyshores

Studies cited in the Femara insert say that even at 20% dose, estradiol levels are not detectable. I don't see the usefulness of blood tests since studies showed that the meds were effective in basically eliminating the hormonal level. Maybe someone can explain why these tests would be helpful.

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Replies to "Studies cited in the Femara insert say that even at 20% dose, estradiol levels are not..."
madeler22 | @madeler22 | Oct 3, 2022

Me too .

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Zebra | @californiazebra | Jul 3, 2023

@windyshores My question here is, if 20% of the standard dose is enough to make estradiol levels undetectable, why are we all taking the full dose? Higher dose means more side effects. I feel like I'm missing something here. Is there more to that? Is something different about the 20% vs. 100% dose outcome? Thanks for elaborating if you can.

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