Table 1

Means and CIs (pmol/liter) of T, fT, E2, and fE2 obtained by dialysis and by theoretical calculations from total T and E2 concentrationsa

Celite methodImmunotechDiaSorinDSLOrionBykbCis-Bio
Total T386.7 (284.7–525.3)393.4 (279.0–554.7)641.4 (480.6–855.9)1219.8 (1009.0–1474.6)1029.1 (774.0–1368.2)966.0 (693.8–1345.0)869.8 (638.9–1184.1)
fT by dialysis4.21 (3.01–5.90)4.26 (2.84–6.39)7.29 (4.87–10.93)13.67 (9.97–18.75)11.37 (7.73–16.71)10.86 (7.25–16.26)9.74 (6.44–14.71)
fT calculated by Eq. A4.70 (3.42–6.46)4.76 (3.23–6.99)8.16 (5.58–11.96)15.37 (11.55–20.47)12.78 (8.89–18.35)12.20 (8.26–18.02)10.92 (7.45–16.02)
Total E26.81 (4.80–9.68)67.16 (55.40–81.41)118.05 (103.69–134.41)36.51 (30.86–43.20)
fE2 by dialysis0.12 (0.08–0.18)1.21 (0.97–1.49)2.04 (1.73–2.41)0.65 (0.54–0.80)
fE2 Eq. A0.16 (0.11–0.23)1.57 (1.26–1.96)2.66 (2.25–3.15)0.85 (0.69–1.04)
  • a SHBG concentrations were measured by the Cis-Bio International assay.

  • b Byk, Byk-Sangtec Diagnostica; Cis-Bio, Cis-Bio International.