OraQuick ADVANCE How to Run the Test - PowerPoint PPT Presentation

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OraQuick ADVANCE How to Run the Test

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  1. OraQuick ADVANCEHow to Run the Test

  2. Overview • Background Presentation • Demo of the test • Practice tests - You will practice running 2 tests • We will not be testing anyone in the room • Proficiency Test - You will run 5 tests without assistance • Run, read, and document 5 tests • Read results of 10 test images • Pass / fail course, must get 100% to pass

  3. What Do You Know About Rapid HIV Tests?

  4. Intro to OraQuick ADVANCE Rapid Test • One-step test • Visual interpretation • Uses blood or oral fluid • Looks for HIV antibodies • Results in 20 to 40 minutes

  5. In California…. • Individuals who have been trained by CDPH/OA and are working in a OA-funded HIV testing site can run HIV/Hep C rapid tests OR • Are working in an HIV testing site that meets these two criteria: • Utilizes HIV counseling staff who are trained by OA or its agents and • Has a quality assurance plan (QA) approved by the local health department in the jurisdiction where the site is located and has HIV testing staff who comply with specific QA requirements.* • They must also be certified to perform finger sticks (or be occupationally exempt, like nurses) * QA requirements are specified in Section 1230 of Title 17 of the California Code of Regulations

  6. Package Insert • Contains instructions • CLIA requires following the manufacturer’s instructionsto the letter!!

  7. Subject Information Brochure • Contains information about the test that is relevant to the client • Package Insert says, “All subjects must receive the Subject Information Brochure” • Check in with your site to see how this is handled

  8. Test Accuracy • We’re going to talk about how well the test works • You do not need to memorize the details - only need to know test is very accurate • There are two components of test accuracy: • Sensitivity • Specificity

  9. Specificity • When a test finds something, it should be the right thing • Tests ability to detect a true negative

  10. Specificity • More specific than standard HIV test (EIA) • Test is very accurate (but not perfect) • Screening test is designed to be very sensitive. • Due to this design, we sacrifice a little specificity. • Must confirm preliminary positives (SOC, false+) • Draw blood and send to lab (conventional oral test is back up)

  11. Sensitivity • The ability of a test to find what it’s looking for and not miss anything. • Test’s ability to detect a true positive

  12. Sensitivity • Rapid test is at least as sensitive as conventional HIV test (EIA) • RR = repeatedly reactive

  13. Combining Specificity and Sensitivity • An ideal test would find the right thing (specificity) and not miss anything (sensitivity)

  14. Think of a Tuna net…. A net that gets all the tuna and none of the dolphins

  15. Because Test is Highly Sensitive… • We do not need to confirm negatives • We do, however, always need to confirm reactive/ preliminary positives

  16. 2 Different Tests Stat-Pak 1stTest _ + + Negative, please come back and see us in 6 months OraQuick Test Reactive, 2ndTest _ + Both tests were reactive your next step is to see a doctor and we can help you with that Lab Testing

  17. With Clients… • Emphasize that the test is extremely accurate • De-emphasize statistics and percentages • For example “This test is highly accurate”

  18. Quality AssuranceRequirements • QA are practices and procedures which ensure that every client receives an accurate test result • QA reduces human error as much as possible

  19. Components of Quality Assurance • Personal and logistical characteristics • External controls • Lab space • Universal precautions

  20. Must Have… Steady hand Good eye sight Organizational skills Adequate lighting • Full/bright light, task light • Do not use a flashlight

  21. External Controls • Fluids made from human plasma • Biohazards – wear gloves! • Controls can be negative, positive for HIV-1, or positive for HIV-2 • Expire 56 days after opening

  22. External Controls are Used for: • Training, we will use them today • Determining if test is working properly • Determining if lighting is adequate • Determining if the test reader has sufficient eye site

  23. HIV-1 vs HIV-2 • Two different strains • Both are transmitted the same way • HIV-2 is less infectious • HIV-2 progresses more slowly • HIV-2 found in West Africa and is rarely found elsewhere

  24. When to Run External Controls • New operator • New setting or conditions changed significantly • New test kit lot or shipment • Out of range testing area or storage area temperature • Two invalid results in a row • Every 40 tests or once a month (whichever comes first) Why?

  25. Temperature Control • Perform test, • 59-99 degrees • If testing temperature is out of required temperature range stop testing • If out of temp range, run controls before proceeding(ask State) • Store test: 35-80 degrees

  26. Lab Space • A space for undisturbed test processing • Your site is a lab • Separate from counseling area • No smoking, eating or drinking

  27. Universal Precautions The universal practice of avoiding contact with patients' bodily fluids (blood), by means of the wearing of nonporous articles such as medical gloves

  28. Gloves • Wear them when handling blood or blood products, and…. • TODAY– whenever you touch the control fluid vials!!!! • How often do you change them? • How do you remove them?

  29. Sharps: Handling & Disposal • Sharps are Medical instruments that are used to puncture the skin (syringes, lancets, needles) • Dispose of sharps immediately, in a hard redplastic bio bin! • Do NOT dispose of sharps in a red bio hazard bag

  30. Biohazard Bags: Handling & Disposal • Bandages, used cotton and gauze, and gloves with body fluids on them are bio hazardous waste • By law, if fluid cannot be squeezed out of the cotton, gauze, etc., the waste item can be disposed of in regular trash.

  31. For Today’s Training • Place loops and used test kits in the sharps container • Place gloves and all other trash in the brown paper bag

  32. Paperwork Needed • Expanded Checklist • Short Checklist (Competency Assessment Test list) • Rapid testing log or lab slip • Lab stickers • HIV Testing Form • Always use blue or black ink only!

  33. Introduction to the Test • Control line • Test line • Flat pad

  34. Trainers Demonstrate • Trainer Reads • Other Trainer preforms test • Participants follow along (Expanded Checklist)

  35. Participants’ First Practice • No food or drink • Listen to detailed steps: • Only do what we tell you to do • Do all steps in order • If you finish a step quickly, wait for the next step

  36. Reading Time • Results in 20-40 minutes • If a reactive result appears before 20 minutes have passed, the result may still not be read until at least 20 minutes have passed

  37. OraQuick Test Results • Two lines: • “C” - Control line • “T” - Test line • Negative result • Reactive result • Invalid result

  38. What causes invalids? • Human error (e.g., no specimen) • Unknown • Manufacturer error If you ever have an unusual result, do not deliver it

  39. What does it mean if a client has an invalid test result?What does the darkness of the lines mean? NOTHING

  40. A D B C C C C C T T T T G H F E C C C C T T T T

  41. Participants’ Second Practice • Pair up • One person run a test at their own pace, using the short checklist • Partner observe them and help only as needed (e.g., if you see any steps that were missed, say something) • Switch • Use the checklist!!!!

  42. Internal Control – The “C” Line • The control line is the “C” line • Internal control tells us: • Specimen was adequately applied • Proper hydration • Migration of reagents past the “T” zone. Internal & external controls are standard lab practice – not a sign of test kit unreliability

  43. Test Line – The “T” Line • The “T” line is the “test line”. It works with the external control fluids to: • tell us if the result is reactive or non-reactive. • tell us if the reader can see lines. • tell us if there is proper lighting. • tell us if the reader’s eyesight is adequate to run the test.

  44. Controls Work Together • If the internal control & the external controls both tell us the test kit is working, why do we need both? Because they tell us something different! • “C” line tells us test kit is working properly • “T” line tells us the test kit can detect HIV antibodies when they’re present

  45. Results of Practice Test • Did you get the correct result? • Any questions? • The control fluid that we use provides a “challenge sample” • Light control line verifies lighting is OK • Verifies test kit detecting small amount of antibody • Darkness of line NOT related to viral load, disease progression, or anything else about the client

  46. If a Client Asks to See the Test Kit, What Would You Do? • Say “No” – Why? • Could compromise confidentiality • Only trained personnel may read the test • Test is disposed of in biohazard bag as soon as it’s read • Think about the picture with the pink background – if you have a light line would you be able to see it on this test?

  47. How Do You Correct a Written Mistake? • A single crossed-out line, corrected entry written clearly above, include date and initials of the individual making the change. • At no time should an original entry be obliterated or otherwise made illegible by a change on the record. 7:22pm T.K. 12/15/2011 End time: 7:12pm

  48. Any questions? Proficiency tests coming next….

  49. OraQuick HIV Test Proficiency: Words of Caution • Follow the checklist!!!! • This is not a test of memorization • Run five tests using five differentvials • Put your name on the top of your paper(s) • Take your time, double & triple checking your work • If you make a mistake on your paperwork • and you catch it, you can fix it. • and I catch it, you will have to come back another day