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Transcript of OraQuick ADVANCE How to Run the Test. Overview Background Presentation Demo of the test Practice...
![Page 1: OraQuick ADVANCE How to Run the Test. Overview Background Presentation Demo of the test Practice tests - You will practice running 2 tests –We will.](https://reader031.fdocuments.us/reader031/viewer/2022020718/56649d145503460f949e92e4/html5/thumbnails/1.jpg)
OraQuick ADVANCEHow to Run the Test
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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
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What Do You Know About Rapid HIV Tests?
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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
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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
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Package Insert
CLIA requires following the manufacturer’s instructions to the letter!!
Contains instructions
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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
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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:SensitivitySpecificity
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Specificity
When a test finds something, it should be the right thing
Tests ability to detect a true negative
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SpecificityTest True Neg Tested Neg False Pos Specificity
EIA 1 467 442 25 94.7%
EIA RR 467 463 4 99.1%
OraQuick I 464 463 1 99.8%
OraQuick RR 464 463 1 99.8%
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)
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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
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Sensitivity
Rapid test is at least as sensitive as conventional HIV test (EIA)
– RR = repeatedly reactive
Test True Pos Tested Pos False Neg Sensitivity
EIA 1 340 340 0 100%
EIA RR 340 340 0 100%
OraQuick 1 340 340 0 100%
OraQuick RR 340 340 0 100%
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Combining Specificity and Sensitivity
An ideal test would find the right thing (specificity) and not miss anything (sensitivity)
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A net that gets all the tuna and none of the dolphins
Think of a Tuna net….
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Because Test is Highly Sensitive…
We do not need to confirm negatives
We do, however, always need to confirm reactive/ preliminary positives
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Stat-Pak1st Test
Negative, please come back
and see us in 6 months
Lab Testing
OraQuick Test Reactive, 2nd Test
Both tests were reactive your next step is to see a doctor and we can
help you with that
_
2 Different Tests
+ +
_ +
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With Clients…
Emphasize that the
test is extremely accurate
De-emphasize statistics and percentages
For example “This test is highly accurate”
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Quality Assurance Requirements
QA are practices and procedures which ensure that every client receives an accurate test result
QA reduces human error as
much as possible
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Components of Quality Assurance
• Personal and logistical characteristics
• External controls
• Lab space
• Universal precautions
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Must Have…
Good eye sight
Organizational skills
Full/bright light, task light Do not use a flashlight
Steady hand
Adequate lighting
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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
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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
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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
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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?
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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
Temperature Control
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Lab Space
A space for undisturbed test processing
Your site is a lab Separate from counseling area No smoking, eating or drinking
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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
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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?
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Sharps: Handling & Disposal
Sharps are Medical instruments that are used to puncture the skin (syringes, lancets, needles)
Dispose of sharps immediately,
in a hard red plastic bio bin!
Do NOT dispose of sharps
in a red bio hazard bag
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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.
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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
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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!
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Introduction to the Test
• Control line• Test line• Flat pad
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Trainers Demonstrate
Trainer Reads
Other Trainer preforms test
Participants follow along (Expanded Checklist)
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Participants’ First Practice
No food or drink
Listen to detailed steps: Only do what we tell you to doDo all steps in orderIf you finish a step quickly, wait for the
next step
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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
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OraQuick Test Results
• Two lines: “C” - Control line “T” - Test line
• Negative result
• Reactive result
• Invalid result
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What causes invalids?
Human error (e.g., no specimen) Unknown Manufacturer error
If you ever have an unusual result,
do not deliver it
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What does it mean if a client has an invalid test result?
What does the darkness of the lines mean?
NOTHING
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C
T
C
T
C
T
C
T
C
T
C
T
C
T
C
T
A B C D
E F G H
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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!!!!
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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
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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.
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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
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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 OKVerifies test kit detecting small amount of antibodyDarkness of line NOT related to viral load, disease
progression, or anything else about the client
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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?
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How Do You Correct a Written Mistake?
7:22pm T.K. 12/15/2011 End time: 7:12pm
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.
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Any questions?Proficiency tests coming next….
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OraQuick HIV Test Proficiency:
Follow the checklist!!!!
This is not a test of memorization
Run five tests using five different vials
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
Words of Caution