HCV NS4 antigen is suitable for ELISA and Western blots, excellent antigen for detection of HCV with minimal specificity problems.

1.5M urea, 25mM Tris-HCl pH-8, 0.2% Triton-X & 50% Glycerol.

HCV NS4 protein was purified by proprietary chromatographic technique.

HCV NS4 protein is >95% pure as determined by 10% PAGE (coomassie staining).

Immunoreactive with sera of HCV-infected individuals.

HCV NS4 although stable at 4°C for 1 week, should be stored below -18°C. Please prevent freeze thaw cycles.