Treasury regulations (26 C.F.R.)--commonly referred to as Federal tax regulations-- pick up where the Internal Revenue Code (IRC) leaves off by providing the official interpretation of the IRC by the U.S. Department of the Treasury.
No. Pregnant women are not eligible to donate blood according to the American Red Cross, which also advises waiting at least six weeks after giving birth. Although the amount of blood in your body increases by about 50 percent during pregnancy, you and your growing baby need it for optimum health and nutrition.
You may donate blood if you were vaccinated for influenza, tetanus or meningitis, providing you are symptom-free and fever-free. This includes the Tdap vaccine. You may donate blood if you received an HPV Vaccine, for example, Gardasil.