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My son had the exact same problem. He was O+ pre-BMT and his donor was A+. It took nearly 5 months for his blood type to convert. His last blood transfusion was 4.5 months post-BMT (although he did have a compounding reaction to tacrolimus that caused hemolysis and very increased frequency of transfusions). He had a normal platelet count at that point, which you don't yet have. If you are 100% donor, the conversion will come. I'd rather see your doc hold out at least another month.
As a heads up, make sure you too are not having a drug induced hemolysis reaction, often missed by hematologists. Signs are red cell fragments (schistocytes/bitten cells) on peripheral blood smear, elevated LDH, decreased haptoglobin, rust coloured urine.
Best wishes,
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Nicole, mom to Evan (20); diagnosed SAA November 2007, hATG mid-November 2007, no response after 6 months, unrelated 9/10 BMT June 2008, no GVH, health completely restored thanks to our beloved donor Bryan from Tennessee.
www.caringbridge.org/visit/evanmacneil
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