Current FDA guidelines require all volunteer blood donors have a hemoglobin of 12.5 g/dl or greater, or a hematocrit of 38% or greater prior to donation.
FDA guidelines require allogeneic blood donors to have a hemoglobin level or 12.5 g/dL or greater, or a hematocrit of 38% or greater. Autologous donors (self-donation) must have a hematocrit of at least 33%.
Reticulocytes would be released into the blood soon after a donation. They have 80% the amount of a regular RBC's hemoglobin, and within 24 hours in the blood stream they would become a mature RBC.
If your hemoglobin count is very low, it's important to address the underlying cause before considering blood donation. Most blood donation organizations require a minimum hemoglobin level, typically around 12.5 g/dL for women and 13.0 g/dL for men. You should consult with a healthcare provider to determine when it is safe for you to donate blood, which may be after your levels have returned to normal and any health issues have been resolved.
A hemoglobin level of 12.8 g/dL is within the normal range for adults. However, normal ranges can vary slightly depending on the laboratory and individual factors, so it's best to consult a healthcare provider for interpretation based on your specific health needs.
Anemia is a deficiency in the amount of hemoglobin in the blood.
A blood level of 13.6 typically refers to the concentration of hemoglobin in the blood, measured in grams per deciliter (g/dL). This value suggests that the individual has a normal or slightly elevated level of hemoglobin, which is essential for transporting oxygen throughout the body. Normal hemoglobin levels vary by age and sex, but a level of 13.6 is generally considered acceptable for many adults. However, specific interpretations should be made in the context of a person's overall health and medical history.
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The American Red Cross refuses blood donations from individuals with a hemoglobin level higher than 19.1 g/dL because elevated hemoglobin can indicate potential health issues such as polycythemia, which can increase the risk of complications like blood clots. High hemoglobin levels may also suggest dehydration or other underlying medical conditions that could affect the safety of both the donor and the recipient. Ensuring donor safety is a priority, and these guidelines help maintain the overall health of the blood supply.
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By lowering the blood plasma level, the red blood cells are concentrated.
could indicate anemia
A hemoglobin level of 4.7 is dangerously low and if not properly treated could become fatal. Normally, women should have a hemoglobin level of 12 or more, men 13 or more. Generally, hospitals will begin emergency blood transfusions when the hemoglobin level drops below 7 or 8.