🩸 It’s #NationalDonorDay — and every 2 seconds, a person in the United States needs blood, making donation an ongoing need. Knowing your blood type — and who you’re a match for — helps ensure patients receive the right blood when it matters most. 🔗 Learn more about blood types at the link in bio. Before you read it, we reviewed it. Post Fact Checked By: Healthline Medical Standards & Insights team Post Review Date: 2/13/2026 Article Medically Reviewed By: Meredith Goodwin, MD Article Review Date: 1/16/2024 Source: Adam Felman (2024, January 16). Everything you need to know about blood types. Medical News Today. medicalnewstoday.com/articles/218285