How common is it to have a false positive HPT? How about two of them? Had a pt in ER recently who we did UPREG on before an x-ray and it was +. Then added quant HCG, guess what! NEGATIVE! <2. Repeated UPREG per pt request, +! I know you L&D folks probably don't deal with pregnancy testing (no need for that!), but have you come across this anytime in your career? Know of any causes, other than the fertility meds (which she was not on)? We thought maybe bad batch of tests, but lab said they did 2nd test with different lot #.
thanks a lot.