21 CFR § 660.32 Additional Standards for Diagnostic Substances for Laboratory Tests§ 660.32 Collection of source material.Current through Sep 8, 2026 · Read all of Part 660Blood for Reagent Red Blood Cells from donors of peripheral blood shall be collected as prescribed under § 640.4 of this chapter, except that paragraphs (c), (d), (g), and (h) of § 640.4 shall not apply.