Next step in management in a patient with TSH of 5.6 (normal 0.5-4.0)

Which of the following clinical presentations distinguishes hyperthyroidism from thyroiditis?

A 28-year-old female presents with 1 week of palpitations, increased sweating, tremor and 3 pound weight loss. A TSH is obtained and levels are found to be undetectable. FT4 and FT3 are both elevated. What sign or symptom will the patient likely also have if this is subacute thyroiditis?

A 17-year-old with no past medical history, presents to your clinic complaining of "feeling horrible". She has a 13 pound weight loss in the last 2-months and has increased thirst and urination. She has felt tired and nauseous. On PE her weight is below the 5th percentile, she looks thin, and her skin is pale. her blood pressure is 100/70 and her pulse is 104 bpm. Her respiration rate 28 breaths/minute. Her breath smells fruity. What is the most likely diagnosis?

A 68-year-old female with a seizure disorder controlled with phenytoin presents complaining of muscle cramps, dry skin, and depression. PE shows carpal-pedal spasms after application of a blood pressure cuff. The most likely diagnosis is?

A 26-year-old male presents with: weakness, an 18-pound weight loss, a change in the color of his skin and lightheadedness and dizziness. PE: skin hyperpigmentation since you last saw him 6-months ago. BP is 90/ 70 mm Hg. He looks acutely ill. Labs: serum sodium is low (115 mEq/ L), his serum potassium is high (6.2 mEq/ L), his serum urea is elevated at 9 mg/ dL, and his serum calcium is elevated (12 mg/ dL). What is the most likely cause?

A 42-year-old woman comes to your office with the following signs and symptoms: obesity (40 pounds in the past 6 months), increase in BP, increased body hair, purple streaks on her abdomen, and pains in her bones and joints. PE:BMI 35 kg/m2. BP 160/110 mm Hg; she has obvious hirsutism over her entire body, and her abdomen has purple striae. Her thoracic spine shows evidence of buffalo hump. What is the most likely diagnosis?

Most common cause of acromegaly

A 27-year-old female presents with the sudden onset of increased thirst and increased urination. This began abruptly 1 week ago and has not abated since. She states that since then, she has been thirsty all the time. She was recently diagnosed with bipolar affective disorder and started taking lithium carbonate 1200mg/day PE: BP 110/ 70 mm Hg. She has lost 5 pounds during the past week and looks somewhat dehydrated. What is the most likely diagnosis in this patient?

What is the best laboratory investigation to order to help diagnose prolactinoma?

During her annual physical exam, a 30 y/o female is found to have hypocalcemia. To correct her hypocalcemia, her body will normally increase release of parathyroid hormone (PTH) which: