User Manual For In Vitro Diagnostic Use Only DD-0125-02
Contents
1. For further questions or problems please contact our technical support at trade liferiver com cn Poe ess T Positive2. Liferiver Revision No ZJ0007 Issue Date Jul 1 2012 Vancomycin resistant Staphylococcus Aureus VRSA Real Time PCR Kit User Manual 20 C z y For In Vitro Diagnostic Use Only DD 0125 02 For use with ABI Prism 7000 7300 7500 7900 Step One Plus iCycler iQ 4 iQ 5 Smart Cycler Il Bio Rad CFX 96 Rotor Gene 6000 Mx3000P 3005P MJ Option2 Chromo4 LightC ycler 480 Instrument ec ner Obelis S A Boulevard G n ral Wahis 53 1030 Brussels BELGIUM Tel 32 2 732 59 54 Fax 32 2 732 60 03 E Mail mail obelis net ul Shanghai ZJ Bio Tech Co Ltd www liferiver com cn Tel 86 21 34680596 trade liferiver com cn Fax 86 21 34680595 2 floor No 15 Building No 188 Xinjunhuan road PuJiang Hi tech Park Shanghai China 1 Intended Use Vancomycin resistant Staphylococcus Aureus real time PCR kit is used for the detection of Vancomycin resistant Staphylococcus Aureus VRSA in stool sputum C S F urine gargle food or water samples by using real time PCR systems 2 Principle of Real Time PCR The principle of the real time detection is based on the fluorogenic 5 nuclease assay During the PCR reaction the DNA polymerase cleaves the probe at the 5 end and separates the reporter dye from the quencher dye only when the probe hybridizes to the target DNA This cleavage results in the fluorescent signal generated by the cleaved reporter dye which is monitored real time by the PCR detection system The PC
3. R cycle at which an increase in the fluorescence signal is detected initially Ct is proportional to the amount of the specific PCR product Monitoring the fluorescence intensities during Real Time allows the detection of the accumulating product without having to re open the reaction tube after the amplification 3 Product Description Vancomycin resistant Staphylococcus aureus VRSA is a strain of Staphylococcus aureus that has become resistant to the glycopeptide antibiotic vancomycin With the increase of staphylococcal resistance to methicillin vancomycin or teicoplanin is often a treatment of choice in infections with methicillin resistant Staphylococcus aureus MRSA Vancomycin resistance is still a rare occurrence Unfortunately VRSA may also be resistant to meropenem and imipenem two other antibiotics that can be used in sensitive staphylococcus strains Vancomycin resistant Staphylococcus Aureus real time PCR kit contains a specific ready to use system for the detection of the VRSA using PCR polymerase chain reaction in the real time PCR system The master contains reagents and enzyme for the specific amplification of the Vancomycin resistant Staphylococcus Aureus DNA Fluorescence is emitted and measured by the real time systems optical unit during the PCR The detection of amplified Vancomycin resistant Staphylococcus Aureus DNA fragment is performed in fluorimeter channel FAM with the fluorescent quencher BHQ1 In addition the kit conta
4. e Water is used as the negative control For reasons of unprecise pipetting always add an extra virtual sample Mix the master mix completely then spin down briefly in a centrifuge 2 Pipet 36ul 22 5ul for SmartCycer II Master Mix with micropipets of sterile filter tips to each Real time PCR reaction plate tube Then separately add 4ul 2 5ul for SmartCycer ID DNA sample positive and negative controls to different reaction plate tubes Immediately close the plate tubes to avoid contamination 3 Spin down briefly in order to collect the Master Mix in the bottom of the reaction tubes 4 Perform the following protocol in the instrument Selection of fluorescence channels Target Nucleic Acid 93 C for 15sec 60 C for 1min iade HEX VIC JOE Fluorescence measured at 60 C y 5 Ar you use ABI Prism system please choose none as passive reference and quencher 10 Threshold setting just above the maximum level of molecular grade water 11 Quality control Negative control positive control and internal control must be performed correctly otherwise the sample results is invalid s e The following results are possible Molecular Grade Water Positive Control qualitative assay 12 Data Analysis and Interpretation Ct value HEX VIC JOE UNDET 25 35 Below the detection limit or negative Result Analysis 40 25 35 Re test If it is still 35 40 report as 1 UNDET UNDET PCR Inhibition No diagnosis can be concluded
5. e container e Refrigerator and Freezer e Tube racks e Desktop microcentrifuge for eppendorf type tubes RCF max 16 000 x g e Real time PCR system e Real time PCR reaction tubes plates e Pipets 0 5ul 1000p1 e Sterile microtubes 7 Warnings and Precaution e Carefully read this instruction before starting the procedure e For in vitro diagnostic use only e This assay needs to be carried out by skilled personnel e Clinical samples should be regarded as potentially infectious materials and should be prepared in a laminar flow hood e This assay needs to be run according to Good Laboratory Practice e Do not use the kit after its expiration date e Avoid repeated thawing and freezing of the reagents this may reduce the sensitivity of the test e Once the reagents have been thawed vortex and centrifuge briefly the tubes before use e Quickly prepare the reaction mix on ice or in the cooling block e Set up two separate working areas 1 Isolation of the RNA DNA and 2 Amplification detection of amplification products e Pipets vials and other working materials should not circulate among working units e Use always sterile pipette tips with filters e Wear separate coats and gloves in each area 8 Sample Collection Storage and transportation e Collect samples in sterile tubes e Specimens can be extracted immediately or frozen at 20 C to 80 C e Transportation of clinical specimens must comply with local regulations for
6. e incubation make sure the tube is not open Since the vapor will volatilize into the air and may cause contamination if the sample is positive B The extraction sample should be used in 3 hours or stored at 20 C for one month C DNA extraction kits are available from various manufacturers You may use your own extraction systems or the commercial kit based on the yield For the DNA extraction please comply with the manufacturer s instructions 9 2 Internal Control It is necessary to add internal control IC in the reaction mix Internal Control IC allows the user to determine and control the possibility of PCR inhibition Add the internal control IC 1ul rxn and the result will be got in the HEX VIC JOE channel 9 3 PCR Protocol The Master Mix volume for each reaction should be pipetted as follows 35ul 0 4ul 1 ul 21 5 ul 0 4 pl 1 ul Reaction Mix Enzyme Mix Internal Control Reaction Mix Enzyme Mix Internal Control 36 4yl 22 9 ul Master Mix Master Mix 4ul 36yl 2 5 ul 22 5ul Extraction DNA Master Mix Extraction DNA Master Mix Reaction Reaction Plate Tube Plate Tube K This system is only for PCR Instrument OR PCR Instrument Smart Cycler II XPCR system without HEX VIC JOE channel may be treated with 11 Molecular Grade Water instead of 11 IC 1 The volumes of Reaction Mix and Enzyme Mix per reaction multiply with the number of samples which includes the number of the controls standards and sample prepared Molecular Grad
7. e without disturbing the pellet 3 Add 1 0ml normal saline Resuspend the pellet with vortex vigorously Centrifuge at 13000rpm for 5 minutes Carefully remove and discard supernatant from the tube without disturbing the pellet 4 Repeat step 3 5 Add 50ul DNA extraction buffer close the tube then resuspend the pellet with vortex vigorously Spin down briefly in a table centrifuge 6 Incubate the tube for 10 minutes at 100 C 7 Centrifuge the tube at 13000rpm for 10 minutes The supernatant contains the DNA extracted and can be used for PCR template 9 1 3 C S F urine gargle water samples 1 Take3ml sample to a tube Centrifuge the tube at 13000rpm for 2 minutes carefully remove and discard supernatant from the tube without disturbing the pellet 2 Add 100u DNA extraction buffer close the tube then vortex for 10 seconds Spin down briefly in a table centrifuge 3 Incubate the tube for 10 minutes at 100 C 4 Centrifuge the tube at 13000rpm for 5 minutes The supernatant contains the DNA extracted and can be used for PCR template 9 1 4 Other samples 1 Pipet 100u1 sample to a new 0 5ml tube add 100ul DNA extraction buffer closed the tube then vortex for 10 seconds Spin down briefly in a table centrifuge 2 Incubation the tube for 10 minutes at 100 C 3 Centrifuge the tube at 13000rpm for 10 minutes The supernatant contains the extracted DNA and can used for the template of the PCR Attention A During th
8. ins a system to identify possible PCR inhibition by measuring the HEX VIC JOE fluorescence of the internal control IC An external positive control defined as 1x10 copies ml is supplied which allow the determination of the gene load 4 Kit Contents DNA extraction buffer 2 vials 1 5ml VRSA Reaction Mix 1 vial 950ul 1 vial 12ul 1 vial 400u1 1 vial 30ul 1 vial 30ul PCR Enzyme Mix Molecular Grade Water Internal Control IC VRSA Positive control 1x10 Copies ml Analysis sensitivity 1 X 10 copies ml Note Analysis sensitivity depends on the sample volume elution volume nucleic acid extraction methods and other factors If you use the DNA extraction buffer in the kit the analysis sensitivity is the same as it declares However when the sample volume is dozens or even hundreds of times greater than elution volume by some concentrating method it can be much higher 5 Storage e All reagents should be stored at 20 C Storage at 4 C is not recommended e All reagents can be used until the expiration date indicated on the kit label e Repeated thawing and freezing gt 3x should be avoided as this may reduce the sensitivity of the assay e Cool all reagents during the working steps e Reaction mix should be stored in the dark 6 Additionally Required Materials and Devices e Biological cabinet e Vortex mixer e Cryo container e Sterile filter tips for micro pipets e Disposable gloves powderless e Biohazard wast
9. the transport of etiologic agents 9 Procedure 37 C for 2min 94 C for 2min 9 1 DNA Extraction DNA extraction buffer is supplied in the kit please thaw the buffer thoroughly and spin down briefly in the centrifuge before use It s better to use commercial kits for nucleic acid extraction 9 1 1 Stool or food sample 1 Take about 50mg stool or 500mg food samples to a tube add 1 0ml normal saline then vortex vigorously Centrifuge the tube at 13000rpm for 2 minutes carefully remove and discard supernatant from the tube without disturbing the pellet 2 Add 100ul DNA extraction buffer close the tube then resuspend the pellet with vortex vigorously Spin down briefly in a table centrifuge 3 Incubate the tube for 10 minutes at 100 C 4 Centrifuge the tube at 13000rpm for 5 minutes The supernatant contains the DNA extracted and can be used for PCR template 9 1 2 Sputum sample 1 Trypsin digestive Solution preparation Add 10g trypsin to 200ml sterile purified water and mix thoroughly Adjust the PH value to 8 0 with 2 NaOHsolution Add 2mL 25mmol L CaCl mix thoroughly and store at 4 C Please incubate at 37 C for 10 minutes before use 2 Estimate the volume of sputum and add partes aequales of trypsin digestive solution then vortex vigorously Set at room temperature for 30 minutes Transfer 0 5ml mixture to a new tube Centrifuge the tube at 13000rpm for 5 minutes carefully remove and discard supernatant from the tub
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