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John M. S. Bartlett.pdf - Bio-Nica.info

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146 Benjamin, Smith, and Waites<br />

3.3.8. Calculation of Results<br />

1. N. gonorrhoeae. The LCx Assay uses MEIA detection on the LCx Analyzer to detect<br />

DNA. All calculations are performed automatically.<br />

2. The presence or absence is determined by relating the LCx Assay results for the specimen<br />

to the Cutoff value. The Cutoff value is the mean RATE (c/s/s) of the LCx calibrator<br />

duplicates multiplied by 0.25.<br />

3. Calculation of the Cutoff value:<br />

Cutoff value = 0.25 × (Mean of LCx Gonorrhea Calibrator RATES)<br />

The S/CO value is determined by calculating a ratio of the sample RATE to the Cutoff value<br />

S<br />

CO<br />

Sample RATE<br />

Cutoff Value<br />

3.3.9. Interpretation of Results<br />

N. gonorrhoeae<br />

S/CO Ratio Result Report<br />

>1.20 LCx positive N. gonorrhoeae DNA detected, and positive for<br />

N. gonorrhoeae by LCR amplification and MEIA<br />

detection.<br />

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