An era of new and constantly advancing techniques is revolutionizing our world in the present times. We are in a phase where technology is evolving at its best. In the field of medicine and particularly, in the diagnostic realm ,we have seen the developing molecular diagnostics e.g polymerase chain reaction (PCR), hybridization techniques (flourescent in situ hybridization,etc),__ampersandsignnbsp;array based comparative genomic hybridization, so on and so forth. We are again fortunate to witness the evolution of another technology termed as NANOTECHNOLOGY. It has a wide variety of applications in diagnostics, cancer treatment, drug delivery, and tissue engineering. It is a vast field of modern science where it can be applied in organic chemistry, nuclear reactors, robotics, space applications, telecommunications, satellites, heavy industry and even cosmetics. The list goes on, but a word of caution as we humans are always crossing boundaries and may be using the technology for ignoble causes. So it is up to us to__ampersandsignnbsp; turn nanotechnology into a blessing or a curse.