Can a JW for instance accept blood from others after it has been fractioned but instead of some components only be administered with all blood fractions?
As others have answered, yes, if their conscience allows it. But the Watchtower's 'Truth' is always evolving...for instance, in the mid-80's you would be disfellowshipped if you received an organ transplant, then, the day after New Light was printed in the mid 80's -- it was A.O.K -- according to your Watchtower trained conscience. The GB never did apologize for the thousands of deaths their former 'Truth' caused.
When my JW mom died needing a blood transfusion, hemoglobin (the insides of a red blood cell) was forbidden. Not long after...New Light was printed and it was now a 'conscience matter.' The Watchtower never apologized to me, my family or the thousands of others who lost faithful, sacrificed relatives to the Watchtower's Olde Light, New Light, Dim Light 'Truths'.
Please answer me on this simple question: Does Truth really ever change ?