When the tests finally come back, the patient shows IG levels < 100 for A,G,E and M normal compliment levels, negative HIV antibodies and PCR. What would your next step be in finalizing your diagnosis?
A. BTK Western Blot
B. Karyotype
C. Test for respiratory burst in Neutrophils
D. There is no defenitive diagnosis for this patient
A. BTK Western Blot
This test would help in diagnosing Bruton’s tyrosine kinase (BTK) deficiency, which is associated with X-linked agammaglobulinemia (XLA). This condition is characterized by very low levels of all immunoglobulin classes and normal complement levels.