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Section: Clinical Chemistry
5.11 Clinical Chemistry Problem Solving

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Serum protein and immunofixation electrophoresis are ordered on a patient. The former is performed, but there is no evidence of a monoclonal protein. Select the best course of action.
Perform quantitative Ig G, A, M
Perform the IFE on the serum
Report the result; request a urine sample for protein electrophoresis
Perform IFE on the serum and request a urine sample for IFE