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Endocrine Worksheet

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Analyze the following labs.

  1.    40 year-old woman taking Synthroid 0.088 mg for past year for hypothyroidism

 TSH      7.2 mU/ml
  T4       4.1 mg/dl                              

 You recommend

a. increasing the dose
b. decreasing the dose
c. continuing with present dose

2.    40 year-old  woman taking Synthroid 0.088 mg for past year for hypothyroidism

 TSH      0.2 mU/ml
  T4       12.0 mg/dl                              

            You recommend

a. increasing the dose
b. decreasing the dose
c. continuing with present dose

3. A 40 year-old  woman during her annual well woman check-up.

       TSH      14.3 mU/ml
T3          13.2 mU/ml
T4            2.7 mU/ml                         
Free T4    0.2 ng/ml                                   

 You suspect

a.  primary hypothyroidism
b.  secondary hypothyroidism
c.  hyperthyroidism
d. hypopituitarism

4.      A 40 year old woman visiting her primary health care provider for decrease menstrual periods and feeling hot.

      TSH         4.9 mU/ml   
T3           200 ng/ml   
T4          10.8 mg/dl   
Free T4   2.7 ng/ml                                          

You suspect

a.  primary hypothyroidism
b.  secondary hypothyroidism
c.  hyperthyroidism
d. hypopituitarism

 5.     A 60 year-old man visiting his primary health care provider for nervousness and insomnia.

    TSH           3.3 mU/ml
     T3           200 ng/ml                              
     T4            2.0 mg/dl
     Free T4    8.2 ng/ml

 You suspect

a.  primary hypothyroidism
b.  secondary hypothyroidism
c.  hyperthyroidism
d. hypopituitarism  

6.    A 40 year old man with lethargy and weight gain.

      TSH        0.2 mU/ml
      T4              2.0 mg/ml
      Free T4      0.6 ng.ml

You suspect

a.  primary hypothyroidism
b.  secondary hypothyroidism
c.  hyperthyroidism
d. hypopituitarism  

7.   What lab tests will confirm the diagnosis in question 6?