862.2920—Plasma viscometer for clinical use.
        
        (a) Identification.
         A plasma viscometer for clinical use is a device intended to measure the viscosity of plasma by determining the time period  required for the plasma to flow a measured distance through a calibrated glass tube. Measurements obtained by this device are used to monitor changes in the amount of solids present in plasma in various 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.