The Anti-DNase B (DNB) test checks for past or recent Strep Throat infection. It detects antibodies produced by the body against Group A streptococcus (GAS) bacteria which cause this Strep throat. This test is highly recommended if you have come in direct contact with an infected person or are experiencing symptoms like cough, hoarseness, fever, pain while swallowing, red/swollen tonsils, white patches on the tonsils, tiny red spots on the palate and swollen lymph nodes near the neck. Book the test at the most affordable rates.