On: $1 chip tests for HIV in 15 minutes, fits in your ...

[araneae]

Yup, I'm sure. The Nature article says it's an ELISA test.

http://www.nature.com/nm/journal/vaop/ncurrent/full/nm.2408....

ELISA is an antibody test.

http://en.wikipedia.org/wiki/ELISA

The 100% detection refers to the detection of the antibodies, not the general detection of HIV infection.