Süleyman Kargin1*, Didem Tastekin2, Azamet Cezik3, Murat Cakir1, Kemal Kılıç4, M Sinan Iyisoy5 and Tevfik Küçükkartallar1
Objective: Non-steroid anti-inflammatory drugs can change serum thyroid hormone concentrations by binding to serum proteins. If misunderstood, this situation can give way to inappropriate diagnoses and faulty treatment planning for thyroid diseases in clinical practice. The purpose of our study was to investigate the effects of ketoprofen, lornoxicam, and etofenamate, which are frequently used in clinical practice, on thyroid function tests.
Methodology: The study covered 28 rabbits divided into 4 groups. Groups were administered intramuscular injections daily for 10 days. Thyroid hormones concentrations were tested in the blood samples end of day 10.
Results: An increase in free thyroxin level in the lornoxicam group was recorded on day 7 in comparison to other groups (p=0.015). There was a statistical decrease regarding thyroid stimulant hormone concentration after day 5 in all three groups (Day 5 p=0.000, day 7 p=0.003, day 10 p=0.00).
Conclusion: We believe that previous history of non-steroid anti-inflammatory drug use should be taken into consideration within the scope of patients’ anamneses because non-steroid anti-inflammatory drug use can change the results of thyroid function tests and this change may lead to misevaluations and mistreatment not only for patients with thyroid diseases but also for normal patients.
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