Bioequivalence and Bioavailability Forum

Boys!

From my vacation: What is your problem ?

CVfromCI() gives you the CV for the difference T vs. R.
This is some pooled value of the intra-subject variances of T and R ¹⁾.
So don't expect to get a value comparable to s²_wR!

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¹⁾ R.J. McNally
Tests for Individual and Population Bioequivalence Using 3-Period Crossover Designs
online here.
gives in the context of appropriate intra-subject contrasts (aka progesterone guidance):
s2I=(s2D + s2wT + s2wR/2)
where s²_I is the variance of the difference T-R used for calculating the 90% CI, s²_D is the subject-by-formulation interaction, s²_wT and s²_wR are the intra-subject variabilities of Test or Reference, respectively.

Since you didn't provide me s²_wT try it by your own assuming s2D=0 which in many cases could be reasonably assumed for the partial replicate design.
Remember our discussion on specifying compound symmetry in the FDA Proc Mixed code.