862.1640—Protein-bound iodine test system.
        
        (a) Identification.
         A protein-bound iodine test system is a device intended to measure protein-bound iodine in serum. Measurements of protein-bound iodine obtained by this device are used in the diagnosis and treatment of thyroid disorders.
    
    
        
        (b) Classification.
         Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of  part 807 of this chapter subject to the limitations in  § 862.9.