What is the historical stance of Jehovah’s Witnesses on accepting Hemoglobin as medical treatment?
Before 2000 not allowed – The Watchtower, October 15, 1992 p. 31 – Questions From Readers
Some Christians have occasionally checked the labels on packaged foods, since many governments require that ingredients be listed. And they may choose to do so regularly with any product that they have reason to believe might contain blood. It would be right, of course, to avoid products that listed things such as blood, blood plasma, plasma, globin (or globulin) protein, or hemoglobin (or globin) iron.
After 2000 Allowed – The Watchtower, June 15, 2000 p. 30 – Questions From Readers
Depending on the condition of the patient, physicians might prescribe red cells, white cells, platelets, or plasma. Jehovah’s Witnesses hold that accepting whole blood or any of those four primary components violates God’s law.
Other medicines are coming along that involve (at least initially) extracts from blood components. Such therapies are not transfusions of those primary components; they usually involve parts or fractions thereof. Should Christians accept these fractions in medical treatment? We cannot say. The Bible does not give details, so a Christian must make his own conscientious decision before God.