Blood donation — Grokipedia

History
Early discoveries and initial practices
World War II and post-war expansion
Modern regulations and technological advances
Types of blood donation
Whole blood donation
Apheresis donations
Directed and autologous donations
Donor eligibility and screening
Pre-donation health assessment
Behavioral and risk-based deferrals
Donor eligibility and deferrals
Post-donation blood testing
Donation process
Site preparation and blood collection
Immediate post-donation procedures
Donor recovery and donation frequency