Abstract :
Background: fixation (preservation) is one of the histotechnical stages that stabilizing
important element on the tissue so the element are not dissolved, moved or distorted
during further procedures. Time is an important factor in the fixation process, if the
fixation less than 1 hour it will cause the tissue to not be colored properly, while
fixation more than 24 hours the result is tissue shrinkage. Objective: to determine the
effect of the duration of fixation on the microscopic representation of kidney and liver
tissues with Hematoxylin-Eosin staining. Method: this study uses literature study
method with descriptive data analysis. Results: The results of the study showed that the
tissue by fixation within 6-24 hours showed a good microscopic representation of the
tissue, while on the tissue by fixation within 1 week or more showed an deficient
microscopic representation. Conclusion: based on that result of this study can be seen
that the effect of time fixation on the microscopic tissue representation, the longer of
fixation time, will be more worse to the microscopic result.