Table 2.

Comparison of Total T Assessed via LC-MS/MS or Cobas Assay for the Total Cohort and From Subsets With Low Total T (≤10.40 nmol/L) or Low BioT (≤2.43 nmol/L)^*

	Total T via	Total T via	Difference, nmol/L	Correlation
	LC-MS/MS, nmol/L	Cobas, nmol/L
Total cohort	13.79 ± 6.51	13.41 ± 5.96	−0.37 ± 3.20, P = .098	r = 0.883, P < .001
Low total T	8.00 ± 1.77	8.37 ± 2.90	−0.36 ± 2.25, P = .182	r = 0.789, P < .001
Low BioT	13.33 ± 6.49	12.99 ± 5.86	0.35 ± 3.37, P = .216	r = 0.872, P < .001

^*Values are reported as means ± standard deviation in SI units for ease of interpretation, but statistical outcomes were calculated using the natural logarithm of these values. To convert T to nanograms per deciliter, multiply value by 28.84.