Some pregnancy tests (as far as I know most/all) use animal antibodies, called monoclonal antibodies. These antibodies are grown/farmed from animals, often mice or rabbits.

Because these pregnancy tests use animal products, I don't think they count as vegan (though that's somewhat subjective). Are there any clearly vegan tests?

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    Waiting for approximately nine months will give you a high accuracy result. You probably should define the constraints at play. The obvious answer would be: as fast and reliable as the non vegan tests but then what about a test that is slightly faster but not as reliable or vice versa? – Nobody moving away from SE Mar 27 '17 at 21:10
  • Just a precision, "monoclonal antibodies" means that a sole antibody is used, as opposition with "polyclonal antibodies" where several antibodies targets differents part of the target. – Edelk Jan 21 '18 at 9:40
  • I doubt that most commercial tests use antibodies from animal origin. Sounds too expensive. Cheaper to manufacture synthetic antibodies. Can someone add a reference to my claim? I was searching online and couldn't find what antibodies are used in pregnancy tests: synthetic or originated from animals – cloud_traveler Jan 28 '18 at 5:19

Tracking of your basal body temperature as described in detail in the lower half of this article - https://www.verywell.com/body-basal-temperature-chart-to-detect-early-pregnancy-1960284 Is an old-fashioned method of identifying a pregnancy which would avoid the use of animal antibodies.

Further scientific source: https://www.mayoclinic.org/tests-procedures/basal-body-temperature/basics/definition/prc-20019978

For more information regarding the proven correlation between basal body temperature and ovulation/gestation: https://www.webmd.com/baby/tc/basal-body-temperature-bbt-charting-topic-overview

Also see: https://baby-pedia.com/charting-body-temperature-pregnancy-change/

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    Can you find some scientific evidence that this method works? Or numbers that measure its accuracy? – Turion Feb 5 '17 at 11:42
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    @Turion sorry, your comment suggest you don't understand the scientifically proven correlation between basal body temperature and ovulation/gestation. For more details on that please see webmd.com/baby/tc/… – ShanMag Feb 5 '17 at 13:03
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    I don't doubt that there is a correlation. Please don't take my comment as a starting point for a rant. As you certainly know, a correlation has rarely coefficient 1, so a correlation need not be perfect. Furthermore, I'm asking about the accuracy of the method. E.g. in theory, condoms absolutely prevent pregnancy, but in practice, there is a risk that it doesn't work. So I'm asking now what the risk of this method is. – Turion Feb 5 '17 at 13:09
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    Also, while it's great that you're supplying further links for your claims, they aren't really scientific sources (i.e. published in a peer-reviewed journal on medicine or biology). – Turion Feb 5 '17 at 13:12
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    @Turion Rant? I fear you read some sort of tone into my comment that I promise you was not there, just trying to understand your comment further. The Mayo Clinic article is very much a scientific source and a lot of peer-reviewed medicial journals are its groundwork (they're listed at the bottom of the article itself)? – ShanMag Feb 5 '17 at 13:20

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