A chromatography strip is used to test a kit for radiochemical impurity and is counted in a well counter. Part A contains 99mTc pertechnetate, and Part B contains bound 99mTc in the desired form. If the results show 258,000 cpm in Part B and 55,000 cpm in Part A, can this kit be used for injection into patients? (a) Yes (b) No
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