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Table 1 Laboratory findings in 2 girls with rapid reversal of severe hypothyroidism

From: Case report: rapid spontaneous recovery from severe hypothyroidism in 2 teenage girls

 

Age

Total T4

nmol/L*

Free T4

pmol/L**

TSH

miU/L

TPO Ab units/ml #

Comments

Case 1

13.0

14.2

 

468

  
 

13.1

86.4

 

17.8

  
 

13.3

 

15.5

0.21

630

 
 

13.9

73.5

 

4.3

  
 

14.8

<6.4

 

262

1432

 

Case 1 DZ twin sister

12.5

 

0.65

915

  
 

13.9

105

 

2.45

 

75 μg T4

 

14.0

 

5.2

77

528

5 weeks off T4

Case 2

11.0

87.7

 

3.7

  
 

13.7

7.7

 

183

 

T3 0.85 nmol/L

 

13.8

 

11.6

15.8

291

 
 

13.9

69.7

13.8

3.55

  
 

14.5

78.5

 

5.1

  
  1. *Normal range 65–155 nmol/L.
  2. **Normal range 11.6–20.6 pmol/L.
  3. #Normal range <35 units/ml.