Table 2.

Thyroid function of hyperthyroid patients after parathyroidal surgery (n = 30) is compared with hyperthyroid patients due to other causes (n = 17; Graves' disease: n = 7, autonomous thyroid adenoma: n = 10) serving as control group.

	Hyperthyroid patients after SHP surgery n = 30	Control group n = 17	p
TSH [mU/L]	0.13 ± 0.02	0.01 ± 0.01	0.003
fT3 [ng/L]	6.47 ± 0.68	5.40 ±1.61	0.30
fT4 [ng/L]	22.33 ±2.14	16.33 ± 4.55	0.87
Thyroglobulin [ng/mL]	373.6 ± 93.3	31.6 ± 12.2	0.01

Medians ± standard errors are displayed. A two tailed student's-t test was used.

fT3: free triiodothyronine, fT4: free thyroxine, SHP: secondary hyperparathyroidism, TSH: thyroid stimulating hormone.