Seven of the eight radiopharmaceuticals tested can safely be prepared using eluate from a generator that has remained uneluted for 7 days. Under these conditions, care must be taken when preparing Tc-macrosalb, as its RCP remains unsatisfactory up to 2 h after preparation.
When using iTLC-SG to measure the radiochemical purity of (99m) Tc medronate, an artefactually high level of (99m) Tc pertechnetate impurity is measured when the medronate concentration in the sample is low. The iTLC-SG stationary phase may be unsatisfactory for measuring the radiochemical purity of (99m) Tc medronate.
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