Getting critical values for t-student criteria

Hello!
It is possible to get the critical values of t-student criteria using Math.NET?

I think the answer is “maybe.” The function you want is

double InvCDF (double location, double scale, double freedom, double p)

found in MathNet.Numerics.Distributions.StudentT

but the following warning is found in the documentation:

WARNING: currently not an explicit implementation, hence slow and unreliable.