6 results
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid Function ... • Low TSH, Low ... T4 +/- T3 → Primary ... #algorithm #diagnosis ... endocrinology #TFTs #TSH #Interpretation
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
Thyroid Disease Hyperthyroidism ... high; in some cases ... disease course #hypothyroid ... #hyperthyroid # ... differential #diagnosis
Causes of Secondary Amenorrhea - Differential Diagnosis Algorithm
Absence of menses for more than 3 cycles or
Causes of Secondary ... Amenorrhea - Differential ... Diagnosis Algorithm ... : • Functional ... compression) • Hypothyroidism
Causes of Primary Amenorrhea - Differential Diagnosis Algorithm
No onset of menarche by age 16 with secondary
Amenorrhea - Differential ... Diagnosis Algorithm ... Etiology - High FSH, Low ... Hypothalamic: • Functional ... Hyperprolactinemia • Hypothyroidism
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
- Differential ... Diagnosis Algorithm ... Vomiting • NG suction ... Hypokalemia #Nephrology #Differential ... #Diagnosis #Algorithm
Causes of Male Infertility - Differential Diagnosis Algorithm
Sperm Transport:
 • Vasectomy
 • Cystic fibrosis gene mutation
- Differential ... Diagnosis Algorithm ... Abnormal semen analysis ... hypogonadism) Low ... hyperprolactinemia, hypothyroidism