Based on this, I am welling to conclude that altitude adjustment likely applies to pregnant women also. The issue on what is appropriate definition of anemia during pregnancy is another matter. The same reference pointed out by Mr. Parvanta has some detail on that also. For clincal purpose, it would be useful to consider the stiking difference in Hb level across pregancy when defining anemia. There have been a number of studies on altitude effects, though fewer in recent years.
Blood volume changes during three-week residence at high altitude.
Erythrocyte reference values in healthy adults living at 2240 m above sea level. Thanks I want to say thanks very much at all the persons which have answer to my question of hemoglobin altitud correction. You have really helped me.