Comparison of immediate polyvinyl alcohol (PVA) fixation with delayed Schaudinn's fixation for the demonstration of protozoa in stool specimens
Markell, E.K.; Quinn, P.M.
American Journal of Tropical Medicine and Hygiene 26(6 Pt 1): 1139-1142
1977
ISSN/ISBN: 0002-9637 PMID: 563681 Document Number: 111639
Immediate fixation of stool specimens in polyvinyl alcohol fixative (PVA) was compared with Schaudinn's fixation delayed until the specimens were received in the laboratory, in a series of 100 consecutive positive stool specimens. More specimens were found positive following PVA fixation, and the numbers of organisms present on the slides were greater in specimens processed by this technique than after Schaudinn's fixation. The routine use of PVA fixation prior to transportation of the specimen to the laboratory is recommended. [AS].