A laboratory can report a substantial increase in a collagen-related measurement without demonstrating that human skin has become healthier, stronger or better able to repair itself. That distinction is central to interpreting research on p
Two peptide samples can produce the same measured molecular mass and still represent different chemical structures. That possibility creates an important challenge for laboratories that rely on analytical measurements to confirm the identit
A laboratory technician places a carefully labeled reference material into an analytical instrument. The chromatogram looks clean. A second measurement produces the expected molecular mass. Repeated tests show little variation. On paper, th
