A standard twin mattress is 39 by 75 inches. A king is 76 by 80 inches. This means that a headboard for a king bed is going to be about 76 inches or wider, plenty wide enough to go along the length of a twin bed. Headboards are often slightly wider than the bed for which they are made.
Hemoglobin, Hematocrit, Blood Count. In order to donate blood, a woman must have a hemoglobin level of at least 12.5 g/dL, and a man must have a hemoglobin level of at least 13.0 g/dL. For all donors, the hemoglobin level can be no greater than 20 g/dL.
Donor Safety. Donating blood is a safe and easy process which gives you the chance to change lives. 1  It is not possible to get AIDS or other infectious disease by giving blood. 2  A brand new, sterile, disposable needle is used for each blood donation.3  Once used, the needle is discarded. You can only donate if your health history permits and you feel well. 2  You are asked general health questions and are given a mini physical â temperature, pulse, blood pressure and hemoglobin are checked â prior to donation to ensure that you are feeling well and that it is safe for you to give blood.