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BTD Forums  /  The GenoType Diet  /  Rhesus D Negative
Posted by: carreral4, Thursday, October 3, 2013, 6:11pm
My friend is adamant she is RH D NEG. Is this possible and if so what blood type diet book should she follow? shes always ghostly white anemic
Posted by: ginnyTN, Thursday, October 3, 2013, 6:20pm; Reply: 1
There is no blood type D in humans.  She needs to find out her blood type: O, A, AB, or B
Posted by: ruthiegirl, Thursday, October 3, 2013, 6:25pm; Reply: 2
She's Rh negative, but that doesn't tell us if she's A, B, AB, or O.

Often times, the D is used when there is no A, B, or AB; making her an O. However, this is not always the case. The best thing she can do is fine out her ABO blood type, either by donating blood, asking her medical provider to order the test, or with a home testing kit. In the USA, this test costs $10 and I assume it's about the same price in the UK.
Posted by: Lola, Thursday, October 3, 2013, 6:46pm; Reply: 3
the D antigen is in reference to the RH status

find out her blood type first and let us know

If you do not have the D antigen, you will be RhD negative

so she is in fact an RH positive, cause she does have the D antigen
Posted by: C_Sharp, Thursday, October 3, 2013, 7:04pm; Reply: 4
When dealing with Rh there are five antigens of concern: D, C, c, E, and e.

In countries that do not want to spend money they only test for D and only tell people that value.

If an Rh factor is reported without specifying the Antigen, it refers to the D antigen.

So an Rh and an Rh D value are the same thing.

Rh positive or Rh+  or RhD+ does have the D antigen
Rh negative or Rh- or RhD- does not have the D antigen

The ABO blood type system is separate from the Rh system
Posted by: Mrs T O+, Wednesday, October 9, 2013, 2:34am; Reply: 5
Are the 5 antigens important? Why haven't we heard of them before?
Posted by: Captain_Janeway, Tuesday, October 15, 2013, 4:25am; Reply: 6
Quoted from Mrs T O+
Are the 5 antigens important? Why haven't we heard of them before?

Only if someone has an antibody against any of them and they need a blood transfusion or if a pregnant woman has an antibody against any  of them.

Rh is far more complex than just + or - so it is just easier to keep it simple. OTOH if you want to know more read a textbook on immunohematology.
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