| Abstrakt: |
Unreliable estimates of serum total T3due to the presence of autoantibodies against T3were observed in a woman who developed thyrotoxicosis followed by transient hypothyroidism after childbirth (postpartum thyroiditis). The T3autoantibody levels changed during the postpartum period in a similar way to the thyroid microsomal antibodies. The total T3values were constantly low, whereas the measurement of free T3by the Amerlex analogue method deviated from the expected only at the time of maximal antibody levels. Thus, evaluation of thyroid function may be complicated by the simultaneous presence of thyroid hormone autoantibodies and transient postpartum thyroiditis. |
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