[Characterization of unusual macro CK1 of IgG3kappa-cK-MM type detected in the serum of a patient with idiopathic thrombocytopenic purpura].

An unusual creatine kinase (CK) band detected in the serum of a patient with idiopathic thrombocytopenic purpura (ITP) was studied. The number of platelets of the patient decreased to 2.3 x 10(4)/microL, and serum CK and CK-MB activities increased to 899 and 62.

QuantiFERON TB-2G test for patients with active tuberculosis stratified by age groups.

We evaluated the usefulness of the QuantiFERON TB-2G (QFT-2G) test and the tuberculin skin test (TST) in patients with active tuberculosis (TB) disease stratified by age in 10-year increments. Although the positive rate on TST was over 80% in younger patients aged < or =9 years, it decreased to 55% in patients of aged 70-79 years and 33% in patients aged over 80 years. However, the positive rate on QFT-2G test was over 80% for the age groups between 10-19 and 60-69 years, excluding younger patients aged < or =9 years.

Clinical evaluation of the QuantiFERON-TB Gold test in patients with non-tuberculous mycobacterial disease.

Objective: To evaluate the clinical usefulness of the QuantiFERON TB-2G (QFT-2G) test in patients with non-tuberculous mycobacterial (NTM) disease without a previous history of tuberculosis (TB).

Methods: The study consisted of 214 patients with NTM disease who satisfied the diagnostic guidelines of the American Thoracic Society.

Results: The causative microorganism was Mycobacterium avium in 83 patients, M.