| Total thyroxine (TT4) Quantitative Test Kit(Chemiluminescent Immunoassay,CLIA) | 06979355927451 | JIANGSU CONFIDENCE MEDICAL TECHNOLOGY CO.,LTD | Unknown class | |
| Total thyroxine (TT4) Quantitative Test Kit(Chemiluminescent Immunoassay,CLIA) | 06979355927468 | JIANGSU CONFIDENCE MEDICAL TECHNOLOGY CO.,LTD | Unknown class | |
| Total thyroxine (TT4) Quantitative Test Kit(Chemiluminescent Immunoassay,CLIA) | 06979355927475 | JIANGSU CONFIDENCE MEDICAL TECHNOLOGY CO.,LTD | Unknown class | |
| Total thyroxine (TT4) Quantitative Test Kit(Chemiluminescent Immunoassay,CLIA) | 06979355927482 | JIANGSU CONFIDENCE MEDICAL TECHNOLOGY CO.,LTD | Unknown class | |
| Total Thyroxine (TT4) Rapid Quantitative Test | 06975278860738 | Xenta Biomedical Science Co., Ltd. | Unknown class | |
| Total Thyroxine (TT4) Rapid Quantitative Test | 06975278860745 | Xenta Biomedical Science Co., Ltd. | Unknown class | |
| Total Thyroxine（TT4）Rapid Quantitative Test（Fluorescence immunoassay） | 06975068490275 | WWHS Biotech.Inc | Unknown class | |
| Total thyroxine (TT4) Rapid Test Kit (QDs Immunofluorescence Method) | 26974969791317 | Chongqing iSIA BIO-Technology Co., Ltd. | Unknown class | |
| Total thyroxine (TT4) Rapid Test Kit (QDs Immunofluorescence Method) | 36974969791314 | Chongqing iSIA BIO-Technology Co., Ltd. | Unknown class | |
| Total Thyroxine (TT4) Test Kit | 06973315734684 | Nanjing Vazyme Medical Technology Co.,Ltd. | Unknown class | |
| Total Thyroxine (TT4) Test Kit (Chemiluminescence) | 06921893003029 | Nanjing Norman Biological Technology Co., Ltd. | Unknown class | |
| Total Thyroxine (TT4) Test Kit (Chemiluminescence) | 06921893003036 | Nanjing Norman Biological Technology Co., Ltd. | Unknown class | |
| Total Thyroxine (TT4) Test Kit (Chemiluminescence) | 06921893005238 | Nanjing Norman Biological Technology Co., Ltd. | Unknown class | |
| Total Thyroxine (TT4) Test Kit (CLIA Method) | 36974969797071 | Chongqing iSIA BIO-Technology Co., Ltd. | Unknown class | |
| Total Thyroxine (TT4) Test Kit (CLIA Method) | 56974969797075 | Chongqing iSIA BIO-Technology Co., Ltd. | Unknown class | |
| Total Thyroxine (TT4) Test Kit (Homogeneous Chemiluminescence Immunoassay) | 06974524061653 | Nanjing Poclight Biotechnology Co., Ltd. | Unknown class | |
| TruVue | 15065023763563 | BioFynder Limited | Unknown class | |
| TT3/TT4 (CLIA) | 06977290930482 | DROPHIL BIOTECH (SHENZHEN) COMPANY LIMITED | Class B | |
| TT4 Assay kit CLIA | 06974521004547 | Shenzhen Superbio Technology Co.,Ltd. | Unknown class | |
| TT4 Assay kit CLIA | 06974521004554 | Shenzhen Superbio Technology Co.,Ltd. | Unknown class | |
| TT4 CLIA | 06942609202192 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 CLIA | 06942609202208 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 CLIA | 06942609202215 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 CLIA | 06942609202222 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 CLIA | 06942609204882 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 CLIA | 06942609204899 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 CLIA | 06942609204905 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 CLIA | 06942609204912 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 Immunofluorescence Assay | 06975599467845 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 Immunofluorescence Assay | 06975599467852 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 Immunofluorescence Assay | 06975599467869 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 Immunofluorescence Assay | 06975599467906 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 Immunofluorescence Assay | 06975599467913 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 Immunofluorescence Assay | 06975599467920 | Guangzhou KOFA Biotechnology Co., Ltd. | Unknown class | |
| TT4 Test Kit (Dry Fluorescence Immunoassay) | 06971763220049 | Lansion Biotechnology Co., Ltd. | Unknown class | |
| TT4 Test Kit (Dry Fluorescence Immunoassay) | 06978669681370 | Shenzhen Ukin Biotech Co.,Ltd. | Unknown class | |
| VIDAS® T4 | 03573026064907 | bioMérieux SA | Class B | |
| VITROS™ ECL Total Thyroxine Assay | 06978139076859 | Shenzhen Lifotronic Technology Co., Ltd. | Class B | |
| Wondfo Total Thyroxine (CLIA) | 06971824207354 | Shenzhen Tisenc Medical Devices Co., Ltd. | Unknown class | |
| Wondfo Total Thyroxine (CLIA) | 06971824207361 | Shenzhen Tisenc Medical Devices Co., Ltd. | Unknown class | |
| Wondfo Total Thyroxine (CLIA) | 06971824207378 | Shenzhen Tisenc Medical Devices Co., Ltd. | Unknown class | |
| Wondfo Total Thyroxine (CLIA) | 06971824207385 | Shenzhen Tisenc Medical Devices Co., Ltd. | Unknown class | |
UDI Compass