Sodium Iodide

The recommended oral dose range for diagnostic studies of thyroid function in the average adult patient (70 kg) is 3.7-14.8 MBq (100-400 µCi) of Sodium Iodide I-123. The lower portion of the range 3.7 MBq (100 µCi) is recommended for uptake studies alone, and the higher portion 14.8 MBq (400 µCi) for thyroid imaging.

Concentration of I-123 in the thyroid gland should be measured in accordance with standardized procedures. Consideration should be given to the use of proper instrumentation in thyroid imaging with Sodium Iodide I-123. The determination of I-123 concentration in the thyroid gland may be initiated at six hours after administration of the dose.

Use contents of the capsule up to 24 hours after calibration time and date. Thereafter, discard the capsule with its contents. The user should wear waterproof gloves at all times when handling the capsule.

The patient dose should be measured by a suitable radioactivity calibration system immediately prior to administration.

For intravenous injection only.

CATTLE: 15 mL/100 lb body weight (30 mg/lb of body weight). Administer slowly, using aseptic procedures. Inject carefully to avoid deposition outside of the vein.  May be repeated at weekly intervals, if necessary.

Using aseptic procedures, administer slowly by intravenous injection. Inject carefully to avoid deposition outside of the vein. The usual dose is 30 mg per pound of body weight (15 mL/100 lb). May be repeated at weekly intervals, if necessary.