| K961490 | ELECSYS T4 ASSAY | BOEHRINGER MANNHEIM CORP. |
| K954312 | ACTIVE THYROXINE RIA | DIAGNOSTIC SYSTEMS LABORATORIES, INC. |
| K943416 | DELFIA NEONATAL THYROXINE KIT | WALLAC OY |
| K933426 | STRATUS(R) TOTAL THYROXINE(T4) FLUOR ENZYME IMMUNO | BAXTER DIAGNOSTICS, INC. |
| K932980 | TOTAL T4 FPIA REAGENT SET/CALIBRATOR #T-1039,T-116 | SIGMA DIAGNOSTICS, INC. |
| K931295 | IQ TT4 ASSAY | BECTON DICKINSON ADVANCED DIAGNOSTICS |
| K926563 | AUTOBEAD(TM) T4 ENZYME IMMUNOASSAY TEST KIT | BIO-CHEM LABORATORY SYSTEMS, INC. |
| K925110 | ABBOTT IMX T4 | ABBOTT LABORATORIES |
| K922945 | TECHNICON DAX SYSTEM THYROXINE (T4) METHOD | HERAEUS KULZER, INC. |
| K921935 | THYROXINE (T4) COATED TUBE RIA | MONOBIND |
| K920766 | T4 EIA BEAD ASSAY | TECH-CO, INC. |
| K915235 | CLINICAL ASSAYS GAMMA COAT FREE T4 RADIOIMM. KIT | INCSTAR CORP. |
| K911985 | LUMATAG T4 CHEMILUMINESCENCE ASSAY | LONDON DIAGNOSTICS, INC. |
| K905532 | CIBA CORNING ACS T4 IMMUNOASSAY | CIBA CORNING DIAGNOSTICS CORP. |
| K904816 | THYROXINE MONOCLONAL ANTIBODY SOLID PHASE RADIOIMM | BD BECTON DICKINSON VACUTAINER SYSTEMS PREANALYTIC |
| 00630414599991 | Radioimmunoassay, total thyroxine |
| 00630414599984 | Radioimmunoassay, total thyroxine |
| 00630414177052 | Radioimmunoassay, total thyroxine |
| 00630414177045 | Radioimmunoassay, total thyroxine |
| 00630414125121 | Radioimmunoassay, total thyroxine |
| 00817830022481 | Radioimmunoassay, total thyroxine |
| 00817830022474 | Radioimmunoassay, total thyroxine |
| 00817830022467 | Radioimmunoassay, total thyroxine |
| 06438147179602 | Radioimmunoassay, Total Thyroxine |
| 06438147009589 | Radioimmunoassay, Total Thyroxine |
| 06438147009251 | Radioimmunoassay, Total Thyroxine |
| 00816870023144 | Radioimmunoassay, total thyroxine |
| 00816870023137 | Radioimmunoassay, total thyroxine |
| 00816870023120 | Radioimmunoassay, total thyroxine |
| 00816870023113 | Radioimmunoassay, total thyroxine |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2020-01-29 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2020-01-07 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2019-11-27 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2019-07-26 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2019-05-16 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2019-04-01 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2019-02-21 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2019-02-21 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2019-01-29 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-12-13 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-11-26 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-11-12 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-10-31 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-10-30 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-10-15 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-08-16 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-07-19 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-05-10 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-02-27 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-02-19 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-02-19 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-02-15 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2018-02-05 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2017-12-21 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2017-11-29 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2017-11-09 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2017-10-31 |
| AIA-2000 | TOSOH HI-TEC | 2017-09-08 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2017-07-10 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2017-02-09 |
| ELECSYS T4 ASSAY | ROCHE DIAGNOSTICS | 2017-02-07 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2016-04-20 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2016-02-26 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2016-02-23 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2016-02-15 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2015-12-03 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2015-10-12 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2015-08-24 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2015-05-28 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2015-02-10 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2014-05-16 |
| T4 - THYROXINE | ROCHE DIAGNOSTICS | 2014-04-17 |
| T4 - THYROXINE | ROCHE DIAGNOSTICS | 2014-04-17 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2014-04-01 |
| T4RADIOIMMUNOASSAY, TOTAL THYROXINE | ROCHE DIAGNOSTICS | 2012-12-21 |
| ADVIA CENTAUR XP FT4 | SIEMENS HEALTHCARE DIAGNOSTICS, INC. | 2011-12-08 |
| ADVIA CENTAUR XP FT4 | SIEMENS HEALTHCARE DIAGNOSTICS, INC. | 2011-11-30 |
| ADVIA CENTAUR FT4 | SIEMENS HEALTHCARE DIAGNOSTICS, INC. | 2011-11-18 |
| SIEMENS T4 ASSAY REAGENT | SIEMENS HEALTH CARE DIAGNOSTICS | 2011-11-16 |
| THYROXINE | ROCHE DIAGNOSTICS | 2011-07-16 |