Thyrotoxicosis patients with least radio iodide uptake seen in:
Sub-acute thyroiditis or de Quervain thyroiditis is an uncommon condition, yet is considered the most common cause of painful thyroiditis. Disease is thought to have a viral origin, Has the least radioactive iodine uptake. RAIU in other diseases:
Toxic adenoma
Grave's disease
MNG
Sub - acute thyroiditis
Nuclear medicine