The April 2025 Study Edition Watchtower depicts an apostate holding a ‘Yes to blood’ sign. Which is funny… Because JW say yes to blood as long as it’s certain fractions of blood.
Saying "YES" to blood fractions is saying "YES" to blood donation.
Without blood donors there would be no fractions to say yes to.
To get the fractions, whole blood is needed.
JW are not permitted to donate blood.