blood droplets dried predictably, forming familiar coffee-ring-like deposits surrounded by networks of radial and azimuthal cracks. But as we increased the tilt, gravity pulled the red blood cells ...

A recent study from North Carolina State University finds that “dry blood spot” sampling, or DBS, is comparable to techniques that use larger blood samples and require immediate cold storage ...

Cheung et al. investigated whether measurement of tacrolimus levels in dried blood spots by use of high-performance liquid chromatography tandem–mass spectrometry (HPLC–MS) is a viable ...