Blood

Eligibility Details: Inclusion Criteria: 1. Age ≥18 years, of either gender. 2. Normal health status (as determined by the Investigator review of medical history and blood donor physical exam). 3. Meet FDA, AABB, and site guidelines for blood donation and apheresis platelet donation. Travel, tattoos/piercings and/or male to male sexual contact deferrals do not apply. 4. Complete blood count (CBC) and serum chemistry values within established reference ranges or within guidelines as above. 5. Pre-donation platelet count of more than 150×10e9 platelets/ L. 6. Negative blood donor screening test panel for HIV, HBV, HCV, HTLV, syphilis, and WNV. 7. Subjects of childbearing potential must agree to use a medically acceptable method of contraception throughout the study. A barrier method of contraception must be included, regardless of other methods. 8. Signed and dated informed consent form. Exclusion Criteria: - Clinically significant acute or chronic disease (as determined by the Investigator). - Pregnant or nursing females. - Subjects of childbearing potential not using effective contraception. - Disease states or conditions that preclude apheresis platelet donation per AABB reference standards. - Treatment with aspirin or aspirin-containing medications within 7 days of apheresis or treatment with non-steroidal anti-inflammatory drugs (NSAID), anti-platelet agents (or other drugs affecting platelet viability within 3 days of apheresis (e.g., ibuprofen or other NSAIDs). - Subject received platelet inhibitors within 14 days of donation (e.g., clopidogrel, ticlopidine, amphetamines (e.g., Adderall, Dexedrine)). - Subjects with positive cocaine and/or amphetamine results from urine drug screen. - Splenectomized subjects. - History of known hypersensitivity to indium or chromium. - Has received an investigational drug within the past 28 days.