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The Blood Type Diet Archives Volume 15

D - It's their name for the rhesus antigen, I believe

Posted By: ^heidi^ O - secretor or nonsecretor?
Date: Sunday, 21 January 2001, at 12:54 p.m.

In Response To: Rh(D) Negative: Is it different from Rh negative??? (Carolyn, O negative)

On the blood-type home test cards, the four circles are labelled:


If your blood reacts with one of the circles, that means it has reacted with the Anti-(x) material. So you are "positive" for that reaction -- your blood contains the (x) material, and the Anti-(x) material brought out the reaction.

The D, although I don't know why it isn't "R," is the rhesus antigen. They place Anti-D material on the card. If you have D (rhesus factor), your blood will react on that circle. If you do not have D, there's nothing for the anti-D to react to. In that case you're "rhesus negative." I've also seen "rho" instead of "D." I thought it might be the Greek letter, but again, I really don't know why those letters are used... but I know what they mean in the context of the test. ;-)

Pretty long explanation, but hope it helps!!


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