Not all assays are equal.
Smith
S
S
D005260:Female; D005640:Follicle Stimulating Hormone / Q000032:analysis / Q000592:standards; D006801:Humans; D007753:Laboratories; D010050:Ovarian Function Tests / Q000592:standards*; D012015:Reference Standards; D012016:Reference Values
D005640:Follicle Stimulating Hormone