摘要:The formalin test is an important means of assessing pain evoked-behaviours induced by
moderately intense and long-lasting noxious stimuli, yet the procedures for performing the test have not been
standardised, hindering comparisons of data. In rodents, the level of sensitivity to the test and the evoked
response have been observed to change depending on a number of variables. Among them, gender is the most
important, although many other variables can influence the behavioural response (e.g., the animal species, the
strain of mice and rats, housing conditions, and early social experience). In the present work, we provide
information on the procedures used to perform the formalin test and the effects of both these procedures and
the conditions and manipulation prior to the test on the animal and its behaviour, with the ultimate goal of
improving these procedures and conditions and decreasing the variability among laboratories.