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Saliva Testing Research
10/07/2024

Using over 300 women, this test aimed to look at the efficacy of saliva testing for women's hormone levels. They were primarily looking at estrogen and progesterone.

As we have discussed, saliva testing is often more accurate than blood tests. This is because when you use topical hormones, they are absorbed straight through the skin and don’t get processed first through the liver. Many hormones are used up quickly and others travel in another body fluid – the lymphatic system.

Because of this, topical hormones rarely show up in blood testing, in fact it can take WAY too much of a hormone cream for topical hormones to show up in a blood test. Blood tests can only tell you the total amount of hormones in the body, both the bound and the unbound hormones. We are interested in the unbound hormones because those are the category of hormones able to attach to a hormone receptor and be useful - which is what saliva testing tells us.

This study found that saliva testing was an incredibly accurate way to test estrogen and progesterone in women, showing the clear efficacy of this testing choice!

Link: https://www.sciencedirect.com/science/article/abs/pii/S1472648320305770