User Manual /96 tests - Simoco Diagnostics

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Tianjin Bio-Enoche Engineering Co., Ltd. YNQ-SM-1206-1 A/1 10.11. Repeat step 10.9. 10.12. Add 100μL of substrate solution into each well including the substrate blank. 10.13. Incubate the microtiter plate at 37℃ for 15min without sealing. 10.14. Add 50μL of stopping solution into each well in the same order and at the same speed of the substrate solution addition. Shake the microtiter plate gently to mix. 10.15. Read OD at 450nm within 5min after addition of the stopping solution. 11. QUALITY CONTROL Substrate Blank: the OD must be 0.95μg/L indicates a positive result. 3. 0.75μg/L ≤ Concentration of galactomannan ≤ 0.95μg/L indicates a grey-zone result. It is recommended to resampling within a week. Note: 1. When the concentration of galactomannan is beyond the range of the standard curve: OD sample > Standard R2a, it indicates a negative result. OD sample < Standard R2e, it indicates a positive result. The sample is recommended being diluted and retested. 2. If the square of correlation coefficient of the regression equation is lower than 0.98, it indicates the standard curve is unacceptable and a new test is needed. 13. PRECAUTIONS 13.1. Prevent samples and reagents from contamination of fungi and bacteria. 13.2. Use a separate micropipette or individual disposable tips to avoid carry-over and cross-contaminations. 13.3. Use reagents with the same lot. 13.4. Chemical reagents (acid or alkaline) or dust may affect the activity of conjugate. 13.5. While washing, all the wells are filled with the same volume of washing solution. After the last wash, invert the microtiter plate to dry it by tapping against the absorbent paper to ensure no washing solution left and no foam existing. 13.6. Keep the substrate solution away from strong light and avoid contacting with oxidant. The substrate solution is invalid when turning from colorless to light blue. 5
Tianjin Bio-Enoche Engineering Co., Ltd. YNQ-SM-1206-1 A/1 14. WARNINGS 14.1. Don’t pipette by mouth. 14.2. Don’t smoke, eat or drink in areas where samples or kit reagents are handled. 14.3. Wear disposable gloves, laboratory coat and safety glasses when handling the kit reagents and patients samples. Wash hands thoroughly after testing. 14.4. All the used samples or consumptive materials must be treated as infectious medical wastes. 14.5. The stopping solution is caustic and easy to induce an ambustion. Please wear safety glasses, disposable gloves and laboratory coat during the test. 15. REFERENCE [1] Update on invasive aspergillosis: clinical and diagnostic aspects. P. Munoz, J. Guinea and E. Bouza, Clin Microbiol Infect 2006,12 (7): 24–39 6
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User Manual /96 tests - Simoco Diagnostics

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