CHOLETEC Kit, Powder for solution for injection Ref.[10226] Active ingredients: Technetium ⁹⁹ᵐTc mebrofenin

The suggested intravenous dose range of Technetium Tc 99m Mebrofenin in the average patient (70 kg) is:

Nonjaundiced patient: 74-185 MBq (2-5 mCi)

Patient with serum bilirubin level greater than 1.5 mg/dL: 111-370 MBq (3-10 mCi)

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

The patient should be in a fasting state, 4 hours is preferable. False positives (non-visualization) may result if the gallbladder has been emptied by ingestion of food.

An interval of at least 24 hours should be allowed before repeat examination.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration whenever solution and container permit.

Radiation Dosimetry

The estimated absorbed radiation doses ^1,2 to organs and tissues of an average subject (70 kg) from an intravenous injection of 370 MBq (10 millicuries) of Technetium Tc 99m Mebrofenin are shown in Table 4.

Table 4. Estimated Absorbed Radiation Doses†:

^† Method of Calculation:
¹ Loberg, M.D., Buddemeyer, E.V.: Application of pharmacokinetic modeling to the radiation dosimetry of hepatobiliary agents. In Third International Radiopharmaceutical Dosimetry Symposium, FDA No. 81-8166, U.S. Department of Health and Human Services, Public Health Service, FDA, Bureau of Radiological Health, Rockville, MD, (1981) pp. 318-332.
² Values for S: “S”, Absorbed Dose per Unit Cumulated Activity for Selected Radionuclides and Organs, MIRD Pamphlet No. 11 (1975).
* Bilirubin <1.5 mg/dL
Calculations assume that 98% of the injected activity is taken up by the liver; activity not removed in the urine in 24 hours is excreted in the intestines and no enterohepatic circulation of activity.
** Bilirubin >10 mg/dL (mean 21.8 mg/dL)
Calculations assume that 66% of the injected activity is taken up by the liver; activity not removed in the urine in 24 hours is excreted in the intestines and no enterohepatic circulation of activity.

Store the kit as supplied at 20-25°C (68-77°F) [See USP] prior to and following reconstitution. Use within 18 hours of reconstitution.

The U.S. Nuclear Regulatory Commission has approved this reagent kit for distribution to persons licensed to use byproduct material identified in §35.200 of 10 CFR Part 35, to persons who hold an equivalent license issued by an Agreement State, and, outside the United States, to persons authorized by the appropriate authority.