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Re: Medical reasons for false positives

From: anonymous@obgyn.net
Thu, 7 Aug 2003 14:51:43 -0500 (CDT)


Thank you for answering Marie. PAPs have all been normal, I have had negative pregnancy tests post pregnancy, the urine tests in the office have all been negative (though yesterday they said that the urine was very diluted), I am in excellent health (no previous disorders except for annovulation). I just don't. This time around seems different, though, because I tested again today (with two different brands measuring higher levels) and both were positive. I read somewhere that LH can be a factor - have you heard anything about this? Gavriella

At Thu, 7 Aug 2003, Marie wrote: >
>Dear Anonymous,
>There may be reasons for both false-negative/positives. Since you don't
>have a period adds to confusion and tests several months ago only prove
>some things, eg.(not caused by cyst)but nothing certain about most
>recent negative-serum test.
>
>Have you had a pelvic examination, PAP?
>
>Any negative HPT's since your pregnancy?
>
>Did your doctor get a positive urine test prior to the serum test?
>
>What kind of HCG test, qualitative/quantitative?
>
>Was your urine tested for contaminants like protein and/or blood, UTI's?
>
>Do you have ANY allergies, reactions to medications, on ANY medications
>and/or OTC?
>
>Have you been tested for antibodies, some types of antibodies interfere
>with accurate HCG testing?
>
>Have you had your thyroid checked?
>
>If for some reason serum-HCG is false-negative then a transvaginal
>Ultrasound @5weeks post mittleschmertz symptom may show something, get
>both urine(1st am) and serial-quantitative serum-HCG <US. Marie




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