Is there a command to test sphericity of a given polychoric correlation matrix?

[daoquendo]

I am doing confirmatory factor analysis with ordinal variables. I know that the factortest command runs the barttlet sphericity test, but under the assumption of normality. Anyone know if there is any command that allows me to run this type of test using as input a given matrix of polychoric correlations. This would be analogous to test the null hypothesis that the determinant of that matrix is different from zero. Thank you