Does HairDX Tell Me How Much Finasteride I Should Take?

Using HairDX to help understand if continuing Propecia is appropriate

I’m 29 with a full head of hair, but it’s a bit thinner than it used to be. I started Propecia six months ago after having some miniaturization detected on the front and top of my scalp. I have yet to notice any positive impact from the drug, but feel Propecia might be affecting my sexual performance. Whether I’m imagining side effects or not, I have been thinking about decreasing dosage or stopping Propecia altogether — I’d rather not have to be on a ED drug in my 30s, especially if Propecia isn’t helping me.

Would it be worthwhile having the HairDX test done to help me weigh the costs and benefits of continuing Propecia? Furthermore, does HairDX offer any insight into how hair loss might progress over time, the degree of hair loss that might occur, or the minimum Propecia dosage I might respond to?

The CAG repeat test from HairDX (marketed as “Finasteride Response Test“), will tell you if you may respond to drugs like Propecia. Start from there and then discuss the findings with your doctor. To my knowledge, there is not direct quantification of the HairDX test for CAG and the dose required of drugs like finasteride.

The standard HairDX test won’t tell you how much hair loss you’ll see in the future — just whether you have the genetic markers for hair loss.