A microscopic observation of drug susceptibility test kit from Hardy Diagnostics, Santa Maria, Calif, detects Mycobacterium tuberculosis while simultaneously detecting the strain’s resistance to isoniazid and rifampicin, the two most common tuberculosis antibiotics. The kit uses a liquid culture medium to accelerate growth, averaging 5 to 10 days, and has color-coded vials and reagents to simplify the procedure and drastically reduce the possibility of errors. The antibiotics’ tablet form is easy to dissolve and requires no measuring, weighing, or mixing. The kit requires only an inverted microscope for full utilization; no other costly capital equipment is needed. For research use only. For more information, visit Hardy Diagnostics.