Aray Asks:
Can an
autopsy show evidence of a three week old fetus? I’m researching for a
novel I’m writing and I need your help, considering that the information has to
be accurate.
My MC’s
mother’s body is severely mutilated ( carved into). She was three weeks
pregnant at the time this gruesome murder took place. Police officials
accuse her husband of doing the deed. Having no leads, they arrest him. The
husband’s on trial for capital murder. The medical examiner takes the
witness stand. The lawyer asks him a series of questions, one being the
autopsy report.
Amryn
Says:
A 3 week
old fetus would not be visible during an autopsy. At that point in development,
the fetus is a ball of cells but without any physical characteristics that one
would recognize as human. If the medical examiner needs to detect that the
victim was pregnant, the best way would be to perform an HCG test on the
victim's blood.
HCG is
the hormone that is responsible for making a pregnancy test appear positive. It
usually takes 3-4 weeks for this hormone to be at a high enough level to
trigger a positive test, however a quantitative test might be enough to suggest
that the victim's hormone levels were slightly above normal. I wouldn't think
it would be enough for a medical examiner to definitively say the victim was
pregnant, but it might be enough for he/she to say it's possible. Any time
after 4 weeks, the HCG levels will begin to rise almost exponentially and therefore
would be more easily detected.
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Amryn Cross is a full-time forensic scientist and author of romantic suspense and mystery novels. Her first novel, Learning to Die, is available on Amazon. The first book in her latest series, loosely based on an updated Sherlock Holmes, is available for pre-order on Amazon. Look for Warzone in January 2015. You can connect with Amryn via her website, Twitter and Facebook.
Amryn, you've given a safe answer but the reality could be different. Yes, the blastocyst (3 week old fetus) is too small to visualize easily, but the cervix will be sealed and uterine wall will usually show signs of pregnancy by now. Current HCG tests are more sensitive than you note. The serum HCG test will be positive by day 10-12 (post conception) with the newer assays. Even the urine HCG tests we do in the ER/Clinic can be positive within 7 days, although testing at 2 weeks or later is preferred.
ReplyDeleteThanks so much for your insight, Braxton!
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