RT Journal Article SR Electronic T1 Free Thyroxine RIA Concentration (GammaCoat) is Spuriously Elevated in Blood Collected in Silicon-Coated Vacutainer Tubes JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 751 OP 752 VO 23 IS 8 A1 Rajatanavian, Rajata A1 Fournier, Lawrence A1 Abreau, Cynthia M. A1 Braverman, Lewis E. YR 1982 UL http://jnm.snmjournals.org/content/23/8/751.abstract AB