Reidel’s Thyroiditis, a Diagnostic and Management Challenge: A Case Report and Review of the Literature

Table 1

Patient’s laboratory results.

Laboratory tests	Patient values		Normal range
TSH	0.89 μU/ml		0.40–4.00
Free T4	1.35 ng/dl		0.70–1.48
TPO ab	10.2 U/l		<34
Tg ab	1.57 U/ml		0.20–4.11
Calcium	Before surgery	91 mg/l	80–105
	Follow-up	77 mg/l
PTH	Before surgery	66 pg/ml	15–68
	Follow-up	21 pg/ml
Serum-IgG4	0.071 g/L		0.039–0.864

TSH: thyroid stimulating hormone; TPO ab: thyroid peroxidase antibodies; Tg ab: thyroglobulin antibodies; PTH: parathyroid hormone; IgG4: subclass 4 of immunoglobin G.