Caller reported a potential false negative urine hcg with consult diagnostics hcg combo cassette.A female pt in her mid twenties was tested with the consult diagnostics hcg combo cassette and results were negative.The pt took a home pregnancy test with positive results.Her last menstrual period was 4 weeks prior to the testing with consult diagnostics hcg combo cassette.The physician's diagnosis was 4 week pregnancy.Physician did not make therapeutic decision based on the test result with the consult diagnostics hcg combo cassette.Test procedure with the consult diagnostics hcg combo cassette was strictly by the product insert.Pt was not taking medications; no physical conditions.
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