Type O is routinely in short supply and in high demand by hospitals – both because it is the most common blood type and because type O negative blood is the universal blood type needed for …

Jan 31, 2024 · Blood types are a classification of blood based on the antigens present in red blood cells. In the United States, O-positive is the most common blood type, and AB-negative is the rarest.

There are four main blood types: A, B, AB and O. Blood bank specialists determine your blood type based on whether you have antigen A or B on your red blood cells.

Dec 26, 2024 · Four main blood types exist: A, B, AB, or O, and everyone has a positive or negative Rh factor. Blood types are important because they affect blood transfusions, pregnancy outcomes, and …

Aug 30, 2022 · According to the American Red Cross, the most common blood type is O positive, which is the blood type for 37% of the population.

Jun 5, 2025 · There are four main blood types: O, A, B, and AB. The universal donor is blood type O and the universal receiver is type AB. Type O is the most common in humans as well, but those with it …

Jan 23, 2026 · O positive (O+) is the most common type of blood group. About 39-42% of people worldwide have this type. The Stanford School of Medicine Blood Center says O+ is the top blood …

Nov 20, 2025 · The most common blood type in the United States is O positive (O+), found in approximately 37 to 38 percent of the population.

Feb 3, 2026 · Some Blood Types are more common than others, and their prevalence varies by region. Globally, these are the most frequently found Blood Types: a) O+ (Most Common Globally): O+ is …

Jul 10, 2025 · If you guessed O positive, you're absolutely right — it's the most prevalent blood type on the planet. In fact, more than a third of the world's population share it!