Comparative Analysis of Biotinylated, Irradiated and 51-Chromium Radiolabeled Red Blood Cells for Analysis of Recovery and Survival After Autologous Transfusion

Inclusion Criteria: * Signed and dated informed consent form. * Age ≥18 years, of either gender. * Normal health status (as determined by Investigators' review of medical history and physical exam). * Qualifies for a collection; Males: height \>5'1" and weight \>130 lbs; Females: height \>5' 5" and weight \> 150 lbs. * Complete blood count (CBC; including RBC indices MCV, MCH, MCHC, and RDW) and serum chemistry values within normal limits (including calcium, bicarbonate, chloride, inorganic phosphate, potassium, sodium, cholesterol, glucose, total protein, triglycerides, LDH, ALT, AST, total bilirubin, BUN, creatinine, and ferritin). Values outside of normal reference range if considered not to be clinically significant by the site PI may be allowed as per the site PI. * Hemoglobin levels \>13.3 g/dL and hematocrit \>40% for both male and female subjects. * Negative blood donor screening test panel for HIV, HBV, HCV, HTLV, Syphilis, and WNV virus at the time of donation. * Female subjects of childbearing potential and male subjects must agree to use a medically acceptable method of contraception throughout the study periods. A barrier method of contraception must be included, regardless of other methods. * Meet or exceed AABB guidelines for blood donation, with the exception of travel deferrals as defined by site-specific SOPs. Exclusion Criteria: * Known RBC disorder that could affect RBC survival. * Treatment with any medication known to affect RBC vi…