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The extraction procedure did not show the correct pink to yellow colour change. What does this mean?

April 26, 2017colour extraction mean pink procedure Yellow

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The extraction procedure did not show the correct pink to yellow colour change. What does this mean?

1 Answer

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10 Posted

This would indicate an error in the test procedure. It is essential that the correct extraction procedure is followed otherwise the Strep A antigen will not be extracted from the swab.