“…Most commonly, the studies utilized visual inspection on a white and black background, magnified visualization with a microscope or magnifying glass, and a form of electronic particle measurement [Marvlen particle size analyzer, nephelometric evaluation, Spectronic 20, absorbance analyses, Turbidity, or HPLC] (Table 2). [1][2]8,[17][18][19][20][21] Study drugs were considered compatible if no visible haze, color change, perception, fibers, or particulate matter was seen or incompatible if any haze, color change, perception, fibers, or particulate matter was seen over a minimum of 4 hours. [1][2][15][16][17][18][19][20][21] O'Donnell et al did consider combinations compatible if agitation of the combination dissolved the precipitate, however this review considered those combinations to be incompatible (Table 1).…”