Let us read a recent Watchtower publication:
Many medical professionals and other advocates of blood transfusion appeal to people to donate blood in hopes of saving lives. However, Jehovah’s holy people acknowledge that the Creator has the right to say how blood is to be treated. To him, “any sort of blood” is sacred. We must be determined to obey his law on blood. By our holy conduct, we prove to him that we deeply appreciate the lifesaving power of Jesus’ blood —the only blood that makes possible the forgiveness of sin and everlasting life.—John 3:16. (The Watchtower November 2014, Study Edition, article: "Why We Must Be Holy", paragraph 15)
So, it is clear that the Governing Body is taking a firm position on the blood ban again. However, if "any sort of blood" is sacred, how can the governing body let Witnesses to accept blood fractions of "the four primary components" coming from donors who are not Witnesses?. But by the above words the governing body is suggesting that it is better to reject all blood. Now note the contradiction by reading a past publication:
Jehovah’s Witnesses hold that accepting whole blood or any of those four primary components violates God’s law....... However, since blood can be processed beyond those primary components, questions arise about fractions derived from the primary blood components......when it comes to fractions of any of the primary components, each Christian, after careful and prayerful meditation, must conscientiously decide for himself. (Question From Readers , w04 6/15 pp. 29-31 )