| Access Free T4 (K240273) | Beckman Coulter, Inc. | 2024-03-06 |
| Elecsys FT4 IV (K220456) | Roche Diagnostics | 2023-04-07 |
| MAGLUMI 2000 FT4 (K182423) | Shenzhen New Industries Biomedical Engineering Co., Ltd. | 2018-10-04 |
| Elecsys FT4 III (K181233) | Roche Diagnostics | 2018-09-18 |
| Abbott Architect Free T4 (K173122) | Abbott Laboratories | 2017-10-27 |
| FREND™ Free T4 Test System (K152422) | Nanoentek USA, Inc. | 2016-02-17 |
| VIDAS FT4 (K132058) | Biomerieux S.A. | 2015-06-08 |
| DIMENSION VISTA FREE THYROXINE FLEX REAGENT CARTRIDGE, FT4, DIMENSION VISTA THYROID STIMULATING HORMONE FLEX REAGENT (K140859) | Siemens Healthcare Diagnostics, Inc. | 2014-11-26 |
| DIMENSION LOCI FREE THYROXINE FLEX REAGENT CARTRIDGE, FT4L, DIMENSION LOCI THYROID STIMULATING HORMONE FLEX REAGENT CART (K140842) | Siemens Healthcare Diagnostics, Inc. | 2014-11-26 |
| ELECSYS FT4 II ASSAY, ELECSYS FT4 II CALSET (K131244) | Roche Diagnostics | 2014-01-27 |
| ADVIA CENTAUR FT4, ADVIA CENTAUR T4 (K132249) | Siemens Healthcare Diagnostics, Inc. | 2013-09-13 |
| LIAISON FT4 LIAISON CONTROL THYROID 1 LIAISON CONTROL THYROID 2 LIAISON CONTROL THYROID 3 (K121951) | DiaSorin, Inc. | 2013-04-04 |
| ABBOTT ARCHITECT FREE T4 (K123379) | Abbott Laboratories | 2012-11-27 |
| IMMULITE 2000 FREE T4 (K083373) | Siemens Healthcare Diagnostics, Inc. | 2009-02-02 |
| ACS 180 AND ADVIA CENTAUR FT4 IMMUNOASSAYS (K080167) | Siemens Healthcare Diagnostics | 2008-08-08 |
| DIMENSION EXL WITH LM CLINICAL CHEMISTRY SYSTEM, DIMENSION FT4L FLEX REAGENT CARTRIDGE, AND LOCI THYROID CALIBRATOR, MOD (K073604) | Dade Behring, Inc. | 2008-03-13 |
| OLYMPUS FT4-FREE THYROXINE, OLYMPUS T4- TOTAL THYROXINE, MODEL# OSR210102, OSR210104 (K070708) | Olympus Life & Material Science Europa GmbH (Irish | 2007-08-21 |
| DIMENSION VISTA FREE THYROXINE FLEX REAGENT CARTRIDGE AND LOCI 1 CALIBRATOR (K053531) | Dade Behring, Inc. | 2006-03-03 |
| FASTPACK FREE T4 IMMUNOASSAY (K030329) | Qualigen, Inc. | 2003-07-03 |
| FREE T4 (THYTOXINE) MICROPLATE EIA TEST MODELS # 1225-300 (K020548) | Monobind | 2002-04-05 |
| ABBOTT ARCHITECT FREE T4 (K983417) | Abbott Laboratories | 1998-11-20 |
| FREE T4 MICROWELL EIA, MODEL #7019 (K982954) | Biomerica, Inc. | 1998-09-24 |
| ACCESS FREE T4 REAGENTS ON THE ACCESS IMMUNOASSAY ANALYZER (K982250) | Beckman Instruments, Inc. | 1998-07-14 |
| BIOSTRIDE FREE T4 EIA TEST KIT (K981243) | Biostride Diagnostics, Inc. | 1998-06-29 |
| BIOCIRCUITS IOS FREE THYROXINE (FT4) TEST CARTRIDGES BIOCIRCUITS IOS CONTROLS (K980819) | Biocircuits Corp. | 1998-04-03 |
| SEALITE SCIENCES, INC. AQUALITE FREE T, ASSAY (K974551) | Sealite Sciences, Inc. | 1997-12-22 |
| IMMULITE FREE T4 (2-STEP) (K971792) | Diagnostic Products Corp. | 1997-07-25 |
| FT4 METHOD FOR THE DIMENSION RXL CLINICAL CHEMISTRY SYSTEM (K971141) | Dade Chemistry Systems, Inc. | 1997-04-28 |
| NICHOLS ADVANTAGE CHEMILUMINESCENCE FREE T4- ESTIMATE KIT (K962408) | Nichols Institute Diagnostics | 1997-03-18 |
| VITROS IMMUNODIAGNOSTICS PRODUCTS FREE T4 REAGENT PACK (GEM.1015) FREE T4 CALIBRATORS (GEM.CO15) (K965142) | Johnson & Johnson Clinical Diagnostics, Inc. | 1997-03-18 |
| ACA PLUS FREE THYROXINE(FT4) METHOD (K962602) | Dade Intl., Inc. | 1996-08-15 |
| ELECSYS FT4 ASSAY (K961489) | Boehringer Mannheim Corp. | 1996-06-11 |
| AMERLITE MAB FT4 ASSAY (K955097) | Kodak Clinical Diagnostics, Ltd. | 1995-12-20 |
| COBAS CORE FREE T3 EIA (K942376) | Roche Diagnostic Systems, Inc. | 1995-04-21 |
| AURA FLEX FT4 200 TEST PACK, FT4 CALIBRATOR PACK (K944697) | Organon Teknika Corp. | 1995-02-22 |
| OPUS FT4 TEST SYSTEM (K940507) | Pb Diagnostic Systems, Inc. | 1994-07-28 |
| AXSYM FREE THYROXINE ( FREE T4 ) (K934544) | Abbott Laboratories | 1994-06-21 |
| CIBA CORNING ACS FT3 IMMUNOASSAY (K940482) | Ciba Corning Diagnostics Corp. | 1994-04-26 |
| COBAS(R) CORE FT4 EIA (K932607) | Roche Diagnostic Systems, Inc. | 1994-01-24 |
| FT4 RADIOIMMUNOASSAY (K934012) | Immunotech S.A. | 1993-11-16 |
| FREE THYROXINE(F T4) METHOD/TECHNICON IMMUNO 1(R) (K930322) | Heraeus Kulzer, Inc. | 1993-11-10 |
| STRATUS FREE THYROXINE (FREE T4) FLUOROMETRIC (K932912) | Baxter Diagnostics, Inc. | 1993-10-28 |
| IMMULITE FREE T4 (K931704) | Diagnostic Products Corp. | 1993-08-16 |
| RADIAS FREE T4 ENZYME IMMUNOASSAY (K931110) | Bio-Rad | 1993-05-20 |
| BECTON DICKINSON SIMULTRAC COMPONENT SYSTEM (K925842) | Bd Becton Dickinson Vacutainer Systems Preanalytic | 1993-04-20 |
| NAT. SCREENING INSTITUTE MICRO-PLATE FREE T4 ASSAY (K925649) | Solarcare Technologies Corp,Inc. | 1993-03-01 |
| ACCESS(R) FREE T4 ASSAY (K925913) | Bio-Rad Laboratories, Inc. | 1993-01-27 |
| VIDAS FREE THYROXINE(FT4) ASSAY (K925177) | Biomerieux Vitek, Inc. | 1992-11-30 |
| VISTA FREE THYROXINE ASSAY (K923572) | Syva Co. | 1992-11-16 |
| KODAK AMERLITE MAB FT3 ASSAY (K922713) | Eastman Kodak Company | 1992-10-26 |
| ELEGANCE FT4 ELISA (K922284) | Bioclone Australia Pty , Ltd. | 1992-07-10 |
| AMERLITE MAB FT4 ASSAY (K920247) | Eastman Kodak Company | 1992-03-02 |
| LUMATAG FREE T4 CHEMILUMINESCENCE ASSAY (K914835) | London Diagnostics, Inc. | 1991-12-17 |
| SR1 FREE T4 ENZYME IMMUNOASSAY (K912937) | Serono-Baker Diagnostics, Inc. | 1991-11-19 |
| AFFINITY FREE T4 TEST SYSTEM (K912698) | Bd Becton Dickinson Vacutainer Systems Preanalytic | 1991-10-07 |
| AIA-PACK FT4 (K913493) | Tosoh Corp. | 1991-09-10 |
| MICROZYME(TM) FREE T4 ENZYME IMMUNOASSAY TEST (K911634) | Immunotech Corp. | 1991-06-24 |
| CIBA CORNING ACS FT4 IMMUNOASSAY (K910684) | Ciba Corning Diagnostics Corp. | 1991-05-01 |
| FLAGEN TM FREE T4 (K904539) | Cyberfluor, Inc. | 1990-11-30 |
| TDX FREE T4 CALCULATION (K903383) | Abbott Laboratories | 1990-09-10 |
| IMX FREE T4 CALCULATION (K903384) | Abbott Laboratories | 1990-09-10 |
| ABBOTT IMX FREE T4 (K902834) | Abbott Laboratories | 1990-09-07 |
| ENZYMUN TEST(R) FT4 (FREE THYROXINE) (K900883) | Boehringer Mannheim Corp. | 1990-05-15 |
| FREE T4 IMMUNOASSAY KIT (K900060) | Advanced Magnetics, Inc. | 1990-03-29 |
| FREE THYROXINE (FT4) RADIOIMMUNOASSAY KIT (K896222) | Nichols Institute Diagnostics | 1989-11-17 |
| DELFIA FREE THYROXINE (FT4) KIT (K894605) | Pharmacia, Inc. | 1989-09-18 |
| AMERLEX-MAB FT4 KIT (K894091) | Amersham Corp. | 1989-08-03 |
| MODIFIED FREE T4 RADIOIMMUNOASSAY KIT (K884753) | Advanced Magnetics, Inc. | 1989-02-27 |
| AMERLIITE FT4 ASSAY LAN.0006/2006 240/144 TEST KIT (K883123) | Amersham Corp. | 1988-12-22 |
| QLIA T UPTAKE ASSAY (K883971) | Bd Becton Dickinson Vacutainer Systems Preanalytic | 1988-10-25 |
| CHEMELIA FREE THYROXINE(FT4)/ENZYME IMMUNO. (EIA) (K874875) | Boots-Celltech Diagnostics, Inc. | 1988-03-24 |
| DIAGNOSTIC KIT FREE T3 AND FREE T4 (K870268) | Sclavo, Inc. | 1987-09-14 |
| STRATUS FREE THYROXINE (FT4) FLUOR. ENZYME IMMUNO. (K870158) | American Dade | 1987-03-19 |
| IQ FTI IMMUNOASSAY (K865104) | Bd Becton Dickinson Vacutainer Systems Preanalytic | 1987-03-16 |
| IQ FREE T4 IMMUNOASSAY (K864658) | Bd Becton Dickinson Vacutainer Systems Preanalytic | 1987-03-12 |
| SIMULTRAC FREE T4[57CO]/TSH MAB[125I] (K864838) | Bd Becton Dickinson Vacutainer Systems Preanalytic | 1987-02-18 |
| AMERLEX-M T4 RIA KIT FOR SERUM AND PLASMA (K860251) | Amersham Corp. | 1986-02-11 |
| SIMULTRAC FREE T4(57CO)/TSH[125I] RADIOIMMUNOASSAY (K853628) | Bd Becton Dickinson Vacutainer Systems Preanalytic | 1985-09-18 |
| AMERLEX-M FREE T-4 RADIOIMMUNOASSAY KIT (K842482) | Amersham Corp. | 1984-08-10 |
| PHASE II FREE T4 KIT (K840901) | Medical & Scientific Designs, Inc. | 1984-04-25 |
| CORNING MAGIC SINGLE STEP FREE T4 (K832381) | Corning Medical & Scientific | 1983-09-01 |
| THYROXINE ANALYSIS PRODUCTS/RADIO-FREE (K823264) | Bd Becton Dickinson Vacutainer Systems Preanalytic | 1983-01-12 |
| BIO MAG FREE T4 RADIOIMMUNOASSAY KIT (K823005) | Bioclinical Group | 1982-12-15 |
| SINGLE STEP FREE-T4 125I RADIOIMMUNO- (K823144) | Corning Medical & Scientific | 1982-11-29 |
| COAT-A-COUNT FREE THYROXINE KIT/COMPONEN (K822882) | Diagnostic Products Corp. | 1982-11-05 |
| FREE T4 RADIOIMMUNOASSAY KIT (K821241) | Bioclinical Group | 1982-06-01 |
| FREE T4 RIA TEST SET (K813465) | Ventrex Laboratories, Inc. | 1981-12-31 |
| CODE IM 2050 AMERLEX FREE T4 RIA KIT (K810231) | Amersham Corp. | 1981-02-10 |
| RIA DIAG. TEST KIT FOR INDEXING THYROX. (K781560) | Nuclear Diagnostics, Inc. | 1978-10-17 |
| RIA TEST KIT SYS. DAMON KIQUISOL FREE (K781012) | Damon Corp. | 1978-07-27 |
| IMMO PHASE FT4 ASSAY (K772194) | Corning Medical & Scientific | 1978-01-06 |
| TRIOBEAD-125 DIAGNOSTIC KIT (K771236) | Abbott Laboratories | 1977-08-03 |