I've searched with no luck. I don't know if it's a stupid question or not, but I'd rather look stupid than waste weeks or months getting the correct treatment. I was tested for Estradiol using the Roche ECLIA methodology.....I assume from reading other posts online that the preferred method is the "ultra sensitive" LC/MS assay method. I was just curious if these are the same or if I need to have another one done using the specific--- ultra sensitive method. Current test is 28.2 (7.6-42.6). I was going to go through an online lab that uses lapcorp. My doctor used them. thanks.