It is used for the quantitative determination of triiodothyronine (T3) in human serum by the principle of the competitive protein binding analysis. This kit contains Ligand coated tubes and is radioactive labeled monoclonal antibody in bovine serum albumin and dye. The fourth product, Reagent Kit IM 1579 RIA Free T3, is intended for in vitro diagnostic use. The methodology used to determine IGG is by measuring the rate of increase in light scattered from particles suspended in solution as a result of complexes formed during an antigen-antibody reaction. This product contains processed goat sera IGG antibody and processed diluted human serum IGG antigen Excess Solution. The third product, IgG reagent 446400, is used for the quantitative determination of Immunoglobulin G (IGG) in human serum or cerebrospinal fluid (CSF) and is primarily used for in vitro diagnosis. Per your letter, this reagent does not contain any biological and animal source material, but, rather, contains various chemicals including sodium benzoate, caffeine, sulfanilic acid, HCL, Sodium Nitrite and Sodium Acetate. It is used to measure the total bilirubin concentration by a timed endpoint Diazo method. The second product, TBIL reagent 442745, is used for the quantitative determination of bilirubin concentration in human serum or plasma. This product contains mouse monoclonal IgG and uses chemiluminescent reaction to determine anti-rubella levels in human serum. The first product, Rubella IgG 34430, is used for the quantitative and qualitative determination of IgG antibodies to the rubella virus in human serum and aids in the diagnosis of rubella infection. Mestas: In your letter dated November 14, 2007, you requested a tariff classification ruling. RE: The tariff classification of Rubella IgG 34430, TBIL reagent 442745, IgG reagent 446400, Reagent kit IM 1579 RIA Free T3 and GenomeLabâ„¢ GeXP Human MetastasisPlex Kit A32712, from France Dear Ms.
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