<prompt> A 28-year-old lady has put on weight 10 kg over a period of 3 years, and has oligomenorrhea! followed by amenorrhea for 8 months. The blood pressure Is 160100 mm of Hg. Which of the following Is the most appropriate investigation ?Scrum electrolytesPlasma CoisolPlasma testosterone and ultrasound evaluation of pelvisT3,T4andTSH  <response>: In above case the paitent shows the symptoms of hypothyroidism and is in the most affecting age group of females . So a thyroid hormone assay is the most approrpiate investigation . Features of Hypothyroidism Ref - Davidson 23e p637 