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| Total Thyroxine (tT4) ELISADRG International IncMultiple thyroid marker IVD, kit, enzyme immunoassay (EIA) | EIA-5279 | DRG International Inc | Multiple thyroid marker IVD, kit, enzyme immunoassay (EIA) |
| Free Thyroxine (fT4) ELISADRG Instruments Gesellschaft mit beschränkter HaftungFree thyroxine (FT4) IVD, kit, enzyme immunoassay (EIA) | EIA-4109 | DRG Instruments Gesellschaft mit beschränkter Haftung | Free thyroxine (FT4) IVD, kit, enzyme immunoassay (EIA) |
| iFlash-T4Shenzhen YHLO Biotech Co., Ltd.Total thyroxine (TT4) IVD, kit, chemiluminescent immunoassay | C86026 | Shenzhen YHLO Biotech Co., Ltd. | Total thyroxine (TT4) IVD, kit, chemiluminescent immunoassay |