Blood Drug Testing

Can menstrual blood be used for a home blood typing test ?

I'm a very squeamish person, but I'm curious to know what my blood type may be. Rather than pricking myself with a needle (which I would be happy to avoid if at all possible), could I wait until I'm menstruating and use menstrual blood for testing? Example of test: http://cgi.ebay.com/Blood-Typing-Test-Kit-EldonCard-Type-Quick-Easy-Testing-/200626045024?pt=LH_DefaultDomain_0&hash=item2eb63e8060

Public Comments

1. Yes it could. All you need is red blood cells to react with the reagents of the test. It doesn't really matter where you get the blood from. The only problem I can think of is the blood clots might make it difficult to read the agglutination on the card.