title: Use of glass beads to defibrinate serum in "microtainers".
mesh_terms: D000328:Adult; D001769:Blood; D001777:Blood Coagulation; D005337:Fibrin / Q000302:isolation & purification*; D005898:Glass; D006801:Humans; D013048:Specimen Handling
chemical_list: D005337:Fibrin