Hi @nme1985 in post menopausal women, the CTX ‘normal’ range is very wide. Depending on the lab you are using or which method of testing that the lab is using, the range could also vary a little bit. Generally CTX falls 104-1008pg/ml +/-variation of lab/testing method. Stick with one lab is best.

In hormone therapy, estrogen is mainly used for its antiresorptive function, although it has many other wonderful effects on the bone. Hence the CTX could be monitored for therapy along with yearly Dexa scan. If you are taking testosterone, get P1NP level at the same time you test for CTX is a good idea. Your current CTX level is looking great!