ZMC STR™ is a non-volatile, non-flammable collection buffer that stabilizes intact cells for extended storage at 2-28°C. ZMC STR™ maintains cellular integrity by inhibiting biochemical processes and stabilizing cellular membranes, proteins, and nucleic acids. Collected samples can also be frozen and thawed without losing reduction in cell count and the nucleic acid amplification and detection. Reagent is provided in labeled screw –cap tubes designed for sample transport of clinical samples. Each package contains 10 x 20 mL tubes.