Representative mass chromatograms of α-diol, and α-diol-d3 (a) in double blank pooled sera (with neither α-diol nor α-diol-d3); (b) in blank pooled sera (with α-diol-d3 only, 4.00 ng/mL); (c) in pooled sera at LLOQ (0.0500 ng/mL; α-diol-d3, 4.00 ng/mL); (d) in pooled sera at 50.0 ng/mL α-diol, and 4.00 ng/mL α-diol-d3; (e) in mouse serum sample # 2 at 0.130 ng/mL α-diol, and 4.00 ng/mL α-diol-d3; (f) in mouse serum sample # 3 at 0.0900 ng/mL α-diol, and 4.00 ng/mL α-diol-d3.