Normal free thyroxine in critical nonthyroidal illnesses measured by ultrafiltration of undiluted serum and equilibrium dialysis.

@article{Surks1988NormalFT,
  title={Normal free thyroxine in critical nonthyroidal illnesses measured by ultrafiltration of undiluted serum and equilibrium dialysis.},
  author={Martin I. Surks and K H Hupart and C. -C. Pan and Lawrence Shapiro},
  journal={The Journal of clinical endocrinology and metabolism},
  year={1988},
  volume={67 5},
  pages={1031-9}
}
Considerable controversy exists concerning the assessment of thyroidal state in critically ill patients with decreased serum T4 and T3 concentrations, in part because serum free T4 values are often low in such patients no matter what method of measurement is used. We developed an ultrafiltration method to measure free T4 and free T3 in undiluted serum and compared the results with those obtained using a standard equilibrium dialysis method to measure free T4 and T3. In 30 consecutive intensive… CONTINUE READING
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