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Published on: February 4, 2017
Validation of alternative methods of preparing 99mTc-MAG3
Shankar Seetharaman1, Michael H Sosabowski, James R Ballinger
1Department of Pharmacy, Guy's and St Thomas' Hospital, Lambeth Palace Road, London SE1 9EH, UK.
Summary
Optimizing 99mTc-mertiatide (99mTc-MAG3) preparation is crucial for radiochemical purity (RCP). Boiling the kit for at least 10 minutes ensures satisfactory RCP (>90%) for diagnostic imaging.
Area of Science:
- Nuclear medicine
- Radiopharmaceutical chemistry
Background:
- 99mTc-mertiatide (99mTc-MAG3) is a vital renal imaging agent.
- Optimizing its preparation impacts diagnostic accuracy.
Purpose of the Study:
- To evaluate key preparation parameters for 99mTc-MAG3.
- To determine the impact of these parameters on radiochemical purity (RCP) and stability.
Main Methods:
- Investigated effects of total activity, activity concentration, boiling time, and delay before boiling.
- Assessed radiochemical purity (RCP) using standard methods.
Main Results:
- Satisfactory RCP (>90%) achieved across various concentrations, including dilute preparations.
- RCP was unaffected by the delay between pertechnetate addition and boiling.
- Boiling times less than 10 minutes resulted in low RCP (<60%).
Conclusions:
- Boiling time is a critical factor for achieving high RCP in 99mTc-MAG3 preparation.
- Standard preparation protocols can yield satisfactory RCP for both adult and pediatric applications.
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