Ikhithi ihloselwe ukutholwa kwekhwalithi kwamasosha omzimba e-IgM kumagciwane amakhulu ayisishiyagalolunye wezifo zepheshana lokuphefumula ku-serum yomuntu noma ku-plasma.Amagciwane atholakalayo ahlanganisa: I-Mycoplasma Pneumonia, Chlamydia Pneumonia, Influenza A, Influenza B, Parainfluenza Virus Type 1, 2 and 3, Respiratory Syncytial Virus, Adenovirus, Coxsackievirus Group B kanye neLegionella Pneumophila Serum Type 1.