Hereditary deficiency of late complement components (C5, C6, C7 or C8) can be associated with which of the following conditions?

Which of the following are true statements about selective IgA deficiency?

Blood is drawn from a patient for serological tests for a viral disease at the time of onset and again 4 weeks later. The results of the tests are considered diagnostic if the: 

Bence Jones proteins are:

The C3b component of complement:

A peripheral blood total leukocyte count is 10.0 × 103/µL. The differential reveals 55% neutrophils, 2% eosinophils, 40% lymphocytes and 3% monocytes. Assuming a lymphocyte recovery of 85%-95%, what is the expected number of T cells in a normal individual? 

The best method to detect infections due to rubella, Epstein-Barr and human immunodeficiency viruses is: 

The air temperature throughout the serology laboratory is 20℃. How will this affect VDRL and RPR test results? 

Hereditary deficiency of early complement components (C1, C4 and C2) is associated with:

A request is received in the laboratory for assistance in selecting the appropriate test(s) for detecting Lyme disease. Which of the following would be suggested?