<prompt> Anita 15-year-old, complains of heavy periods since 2 months. OE: wt 40 kg and BP 12080 mmHg. All of the following investigations are indicated, except :TSHPlatelet countBleeding and clotting timeEstradiol levels  <response>: Investigations in a case of pubey menorrhagia : 1.Blood profile--Hb, bleeding and clotting time, coagulation factors; blood film. 2.X-ray chest for tuberculosis. 3.Thyroid function tests. 4.Pelvic ultrasound PCOD, early fibroid. 5.If medical treatment fails, DC should be done to rule out endometrial tuberculosis by PCR test. Reference: Shaws Textbook of Gynaecology 16th edition page no 340 