| 260 | Radioimmunoassay, Free Thyroxine | Free Thyroxine Test System. |
| 260 | Radioimmunoassay, Free Thyroxine | Free Thyroxine Test System. |
| K182423 | MAGLUMI 2000 FT4 | Shenzhen New Industries Biomedical Engineering Co., Ltd |
| K181233 | Elecsys FT4 III | Roche Diagnostics |
| K173122 | Abbott Architect Free T4 | Abbott Laboratories |
| K152422 | FREND™ Free T4 Test System | NANOENTEK USA INC |
| K140859 | DIMENSION VISTA FREE THYROXINE FLEX REAGENT CARTRIDGE, FT4, DIMENSION VISTA THYROID STIMULATING HORMONE FLEX REAGENT | Siemens Healthcare Diagnostics Inc. |
| K140842 | DIMENSION LOCI FREE THYROXINE FLEX REAGENT CARTRIDGE, FT4L, DIMENSION LOCI THYROID STIMULATING HORMONE FLEX REAGENT CART | Siemens Healthcare Diagnostics Inc. |
| K132249 | ADVIA CENTAUR FT4, ADVIA CENTAUR T4 | Siemens Healthcare Diagnostics Inc. |
| K132058 | VIDAS FT4 | BIOMERIEUX SA |
| K131244 | ELECSYS FT4 II ASSAY, ELECSYS FT4 II CALSET | Roche Diagnostics |
| K123379 | ABBOTT ARCHITECT FREE T4 | ABBOTT LABORATORIES |
| K121951 | LIAISON FT4 LIAISON CONTROL THYROID 1 LIAISON CONTROL THYROID 2 LIAISON CONTROL THYROID 3 | DIASORIN, INC. |
| K083373 | IMMULITE 2000 FREE T4 | Siemens Healthcare Diagnostics Inc. |
| K080167 | ACS 180 AND ADVIA CENTAUR FT4 IMMUNOASSAYS | SIEMENS HEALTHCARE DIAGNOSTICS |
| K073604 | DIMENSION EXL WITH LM CLINICAL CHEMISTRY SYSTEM, DIMENSION FT4L FLEX REAGENT CARTRIDGE, AND LOCI THYROID CALIBRATOR, MOD | DADE BEHRING, INC. |
| K070708 | OLYMPUS FT4-FREE THYROXINE, OLYMPUS T4- TOTAL THYROXINE, MODEL# OSR210102, OSR210104 | OLYMPUS LIFE & MATERIAL SCIENCE EUROPA GMBH (IRISH |
| 00380740121822 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00380740121815 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00380740119812 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00380740119805 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00380740119799 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414996868 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414996851 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414996844 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414599977 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414599137 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414599120 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414553429 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414535432 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414535425 | RADIOIMMUNOASSAY, FREE THYROXINE |
| 00630414535418 | RADIOIMMUNOASSAY, FREE THYROXINE |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-03-26 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-03-26 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-03-23 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-03-20 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-03-12 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-03-10 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-03-09 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-03-02 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-25 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-24 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-24 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-13 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-12 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-12 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-11 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-11 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-07 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-06 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-03 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-02-03 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-30 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-29 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-28 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-28 |
| ELECSYS FT4 II ASSAY | ROCHE DIAGNOSTICS | 2020-01-28 |
| ELECSYS FT4 II ASSAY | ROCHE DIAGNOSTICS | 2020-01-28 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-28 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-23 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-21 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-17 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-14 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-09 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-08 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-07 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-07 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-06 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-03 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2020-01-02 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-12-30 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-12-11 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-11-27 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-11-20 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-11-20 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-11-19 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-11-14 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-11-13 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-11-05 |
| ELECSYS FT4 II ASSAY | ROCHE DIAGNOSTICS | 2019-11-05 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-11-05 |
| ELECSYS FT4 III ASSAY | ROCHE DIAGNOSTICS | 2019-10-24 |