*** w05 3/15 p. 18 par. 8 "You Were Bought With a Price" ***
They knew that Elena, one of Jehovah’s Witnesses, would not donate blood or accept blood transfusions.
*** w00 10/15 p. 30 Questions From Readers ***
When
donating and transfusing blood became common in the 20th century,
Jehovah’s Witnesses understood that this practice conflicted with God’s
Word.
*** w00 10/15 pp. 30-31 Questions From Readers ***
Occasionally,
a doctor will urge a patient to deposit his own blood weeks before
surgery (preoperative autologous blood donation, or PAD) so that if the
need arises, he could transfuse the patient with his own stored blood.
However, such collecting, storing, and transfusing of blood directly
contradicts what is said in Leviticus and Deuteronomy. Blood is not to
be stored; it is to be poured out—returned to God, as it were. Granted,
the Mosaic Law is not in force now. Nevertheless, Jehovah’s Witnesses
respect the principles God included in it, and they are determined to
‘abstain from blood.’ Hence, we do not donate blood, nor do we store for
transfusion our blood that should be ‘poured out.’ That practice
conflicts with God’s law.
*** w92 8/1 p. 25 Letting Their Light Shine in India ***
Because
of accepting the truth, they had refused to join a college strike and
also would not donate blood during a blood-collection campaign
spearheaded by the student organizer.
*** w77 7/1 p. 410 Insight on the News ***
Moreover,
God’s law to his people of ancient times specified that blood, when
taken from a body, was not to be used for anything, but was to be
disposed of. (Deut. 12:16) Later, Christians were specifically required
to ‘abstain from blood.’ (Acts 15:28, 29) So, ‘donating blood as
sacrifice’ is neither effective nor approved by God.
*** w61 1/15 p. 64 Questions From Readers ***
If,
however, he refuses to acknowledge his nonconformity to the required
Christian standard and makes the matter an issue in the Christian
congregation and endeavors to influence others therein to his support;
or, if in the future he persists in accepting blood transfusions or in
donating blood toward the carrying out of this medical practice upon
others, he shows that he has really not repented, but is deliberately
opposed to God’s requirements. As a rebellious opposer and unfaithful
example to fellow members of the Christian congregation he must be cut
off therefrom by disfellowshiping.
Props to blondie who answered this many years ago....
https://www.jehovahs-witness.com/topic/222784/jehovahs-witnesses-can-donate-blood