Iodine Status in Pregnant Women Having Urinary Fluoride in Contaminated Areas: A Case Study of Phayao Province

Table 9

The range, frequency, and interpretation of pregnant women’s serum TSH (N = 152).

Range of serum TSH	N (%)	Interpretation
Serum TSH less than 2.50 μg/L	136 (89.47)	Hazard of hypothyroidism
Serum TSH between 2.50 to 4.50 μg/L	14 (9.21)	Normal
Serum TSH higher than 4.50 μg/L	2 (1.32)	Hazard to hyperthyroidism

Mean = 1.37 μg/L, geometric mean = 0.89 μg/L, median = 1.12, and minimum to maximum = 0.01–5.54 μg/L. Subject serum TSH levels from 2.5th–97.5th percentile: 0.03–4.24 μg/L. , the range of serum TSH based on [24]; the range of serum TSH is less than 2.50 μg/L = and iodine consumption in pregnant women should be increased. The range of serum TSH is between 2.50 and 4.50 μg/L = and iodine consumption in pregnant women is regular. The range of serum TSH is higher than 4.50 μg/L = and the iodine consumption in pregnant women should be reduced.