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Fig. 1 | BMC Research Notes

Fig. 1

From: Clinical laboratory verification of thyroglobulin concentrations in the presence of autoantibodies to thyroglobulin: comparison of EIA, radioimmunoassay and LC MS/MS measurements in an Urban Hospital

Fig. 1

Comparison of Tg measurements by EIA and LC MS/MS methods. a TgAb negative samples (N = 28). Tg concentrations (0.07–346.4 ng/mL), (LC MS/MS = 0.95 * EIA + 2.9, r = 0.99, Syx = 8.5). b TgAb negative samples (N = 17). Tg concentrations (0.07–6.68 ng/mL), (LC MS/MS = 1.43 * EIA − 0.23, r = 0.92, Syx = 1.5). c TgAb positive specimens (N = 20). Tg concentrations (0.07–107.9 ng/mL), LC MS/MS = 1.26 * EIA + 0.45, r = 0.99, Syx= 5.5. d TgAb positive specimens (N = 12). Tg concentrations (0.07–7.55 ng/mL), (LC MS/MS = 1.9 * EIA − 0.03, r = 0.68, Syx = 3.3)

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