CTK develops & manufactures innovative rapid tests, ELISA, external controls, PCR tests, & instruments for research & diagnostics. Our product range specializes in tropical diseases, parasitic infections, gastrointestinal illnesses, bloodborne, biomarkers, hepatitis, STD, respiratory & hormone tests. Use of proprietary recombinant antigens & antibodies produced in-house guarantees consistent supply of high-quality products at an exceptional value. CTK brands & custom OEM packaging options.