Researchers from Columbia University have developed a “lab on a chip” HIV and syphilis test, and are now reporting the first results from tests in the field conducted in Rwanda. The mChip, as it is called, is the size of a credit card and replicates all steps of an ELISA test, at a lower total material cost and within 20 minutes. After application of a blood sample, the chip is inserted into a $100 battery-powered handheld analyzer. It needs only 1 μl of unprocessed whole blood and does not require any user interpretation of the signal, providing a clear-cut yes or no result.
Right now, HIV testing in developing countries either relies on expensive laboratory testing taking a long time, or uses cheaper methods based on lateral flow, which, although very rapid, do not provide very reliable results. The mChip combines Read more »
*This blog post was originally published at Medgadget*
The CDC announced last week that the latest statistics on Chlamydia, gonorrhea and syphilis are still unacceptably high in the United States. The U.S. has some of the highest rates of sexually transmitted infections of any developed country in the world including 1.2 cases of Chlamydia in 2008 and syphilis cases, up 18 percent, are at 13,500. Men who have sex with men accounted for 63 percent of the syphilis cases, but the rate among women also increased 36 percent between 2007 and 2008.
Almost half of the 19 million new sexually transmitted infection cases reported each year are among 15- to 24-year-olds. Clearly marking the shift away from abstinence-only policies, the CDC called for better, more honest and open, sex education including how to use a condom, limiting the number of sexual partners, and avoiding people who have had multiple sex partners. Read more »
This post, Sexually Transmitted Infections Still On The Rise, was originally published on
Healthine.com by Nancy Brown, Ph.D..