Can you get a positive pg test but a negative blood test?

[Tygerlillie]

Is it possible to get a pos pg test (3 of them) and then have a neg blood test?  Also what would those schances be if you have endometriosis?

[lmcrt]

Did you use any meds like a HCG trigger shot. Becuase those could give you false positives.

[Tygerlillie]

Which brand did you use that gave you a false positive and how long after DPO were you when you tested?

[IsabelleCanada]

Hi! I also had a false positive earlier this year but now, I use the digital ones and they're generally more reliable

good luck!

[alikat1205]

i dont' know exactly, except that the blue dye has more false positives, i think it has a tendency to gather on the testing line even when not positive.  the pink doesn't seem to have as many problems with this.   so if you get a positive with a blue dye test, you should repeat with a pink to be sure.  if it was pink, its likely positive! see my pic on my profile of a negative blue dye test.

[Tygerlillie]

What is the difference in the dye?

[alikat1205]

yes, you can, it happened to me.  it happened with a blue dye test, so if you are using that, please re-test with a pink dye test, preferably first response.  endo should not affect testing.  good luck.