Quantiferon TB Gold®
Quantiferon TB Gold® test is a screening test for Tuberculosis. It is a type of IGRA test (Interferon Gamma Release Assay). The test measures the cell-mediated responses to antigens of Mycobacterium tuberculosis. Quantiferon testing was FDA approved in 2001. The test involves having a blood sample taken and sending the specimen to the lab for analysis.
The Quantiferon test can be used as an alternative to either a one step or two step Tuberculosis skin test. Like a TB skin test, the Quantiferon does not distinguish between active or inactive TB. The most recent guidelines from the CDC recommend Quantiferon in most situations.
Tuberculosis screening is often required for health care workers, students, immigration medical exams, international travelers and other people who may be at risk. Sometimes, the tuberculosis skin test is inconvenient due to the need to return in 48-72 hours to have the injection site checked.
Like TB skin testing, live vaccines may interfere with the Quantiferon test results. The CDC recommends the Quantiferon be given either on the same day as live-virus vaccines or at least 4 weeks after live vaccines. Live-virus vaccines include MMR, Varicella, Shingles, Yellow Fever, Smallpox and Intranasal Influenza
Advantages of the Quantiferon TB Gold® include:
- Not needing to return for the test results like the TB skin test which requires 2 visits (we can send the results to you, your school or work)
- BCG vaccine will not cause a false positive in Quantiferon test as it sometimes does with a TB Skin test
- Results are usually available in 3-5 business days
- Can be used in all circumstances in which a TB Skin test is recommended
Limitations of the Quantiferon TB Gold® include:
- Not recommended in children 5 years old
- Limited data on immunocompromised individuals
- Persons very recently exposed to TB
After Testing
Results will be reported as:
- Negative (Normal)
- Indeterminate (the test was unable to determine a result of negative or positive and the test should be repeated with a new blood sample)
- Positive (Abnormal)
Diagnosis of Tuberculosis
Diagnosis of Tuberculosis infection and decisions about personal or public health should be based on other clinical information as well as Quantiferon results.
If you have a positive Quantiferon result, you should be evaluated for the likelihood of progression to active Tuberculosis by either the public health Tuberculosis Clinic or your Primary Care Provider and a Chest x-ray.
TB Skin Testing
A TB skin test is used to determine if a person already has immunity to the Tuberculosis bacteria. This can occur if someone has TB, if they were exposed to TB in the past, or if they received the BCG vaccine. A liquid is injected in the top layers of skin on the forearm, and the injection site is checked 48-72 hours later for a specific reaction.
Read More About TB Skin Testing
The staff was very friendly and professional. I definitely recommend them to anyone who needs their services!
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Professional with quick results.
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The dr was very nice and staff was very friendly I was in and out pretty quick
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It’s simple, fast, and self-explanatory for plenty health needs!
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Very Clean Professional staff and Great Place to Get Testing done 👍
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Super time efficient, friendly and thorough with patient education
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Very friendly staff, clean organized environment, appointment was easy to make and they sent reminders. Our test results are all on their online...
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Very quick & easy visit! The staff are very friendly
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My doc put together a Very comprehensive discussion of where I might be at risk in South Africa over a 24 day itinerary and what vaccines to take..
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I like how easy it was to schedule the appointment, fill out the paperwork ahead of time online, being professionally greeted and treated, how the.
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The staff at the Rainbow location are AWESOME! I've never had a bad experience. I highly recommend the e7 Health Rainbow location.
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Always pleasant staff at the front desk and the medical folks are professional and courteous
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Courteous, efficient and the MA assisting me was kind and patient to his learner that was shadowing him.
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Quick, easy and very professional
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The staff an nurses were very polite and informative about my shots I was getting. I recommend this place to everyone. Again thank u .
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1)I was scheduled for a two step tb test and up to that point they were great, reminded me of my upcoming appointment and everything. They took the
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I went to get vaccinated before my overseas trip. They are not cheap if you don't have insurance but well worth the visit. The staff is friendly...
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I came in to have blood drawn. The location is clean. The staff is very intelligent and helps you right away. My nurse was Alison. She drew two...
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I don’t write reviews, with that being said, Karen (phlebotomist) deserves all the praise in the world. Not only was she patient with me, she...
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Very fast and confidently.
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I really like the online portal e7 has so I can view documents and upcoming appointments. I've never spent over an hour at the Rainbow location...
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LOVE this place!! Upon getting a flu shot, I received amazing customer service and was in and out within 10-15 minutes!! They were very informative
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Great experience!! Quick and easy process!! Received a flu shot and was in and out within 10 minutes or less!! Staff was so friendly and caring...
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QUICK EFFICIENT. FRIENDLY. PROFESSIONAL. .FROM. BEGINNING TO THE END. THANKZ. FOR THE SERVICE. .
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Quick and friendly staff. Very professional and efficient!
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Very courteous, professional, friendly and efficient
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Everyone was very friendly and the customer service was impeccable!! Their professionalism and warm inviting environment made me feel comfortable..
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Super quick and easy process! They let you fill out paperwork before the appointment to expedite the appointment. So smart. They were also very...
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Staff was friendly, especially Melissa at the front desk and Lindy who handled most of my appointment (the blood work, etc.). The process was easy.
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Quick, friendly and professional - I didn't even have an appointment and was in and out in about 1/2 hour - got my results the following day...
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E7 Health when I got to have a TB Test done for my other job I go there all the employees are friendly and polite there facilities are clean
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Very professional, knowledgeable, and kind employees!!!
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Quick service and friendly staff.....
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My experience with E7 was fantastic and I highly recommend them. The clinic was clean, and the staff was very professional and curtious.
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Very fast and simple to register as a patient on line and make appointments. I was able to make a same day appointment and even change it to an...
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Pleasant, timely, and efficient. The travel doctor I talked to was helpful and dedicated to prepairing me for my trip. I'd highly recommend this...
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I went in for an employer-mandated drug test, and was impressed by this site...I was served with alacrity, and the process was seamless. If I ever.
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They staff and Doctors at so professional. They are very welcoming answer all your questions.
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Great place to go for vaccinations if you are uninsured!!! Quick and friendly service!!!
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I set my account up online which sped things up quite a bit when I came in. There wasn't much of a wait. Everyone was very professional and polite.
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Outstanding doctors office. The staff are cordial and treat patients like customers (as opposed to inconveniences, which I have experienced...
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Easy and quick experience. Staff were all very friendly!
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If you are in need of flushots, vaccinations etc. for work or travel this place has friendly employees and almost no wait times.
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Definitely recommend this place. Fast service and efficiency. Excellent environment very clean. Affordable prices. Very friendly work team.
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This is my 2nd time coming here and I've always had a good experience. The staff is very courteous and friendly and the service was fast and easy..
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Very quick service and pleasant staff
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Completely incompetent staff. Spoke to an agent on the phone about making a vaccination appointment for my daughter and specified her age on the...
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Friendly service and minimal wait time! Definitely, recommend!
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The services at e7 Health are excellent from scheduling an appointment to the office visits.
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After accepting a teaching job, I needed. TB rest. I walked in and was greeted right away. I was directed to fill out the form which was easy and..
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I have been here 3 times already, going through TB tests and a physical, and I have never been more impressed with both speed and quality of...
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They we're very friendly and professional. They also squeezed me in for a physical without an appointment. I was in from out of town so I really...
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The staff was very nice. Ms Sidney was wonderful. She explained the process effectively and efficiently.
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I had a great experience here. Easy appointment booking, was taken right on time. Everyone was extremely friendly, and all of the options were...
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Stuff was very knowledgeable and kind. I reccommend this location, every experience I had here was a good one.
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Loved it!
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Pain free intake process. I called and was able to make a next day morning appointment. The paperwork was emailed to me so it was filled out...
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There’s a variety of services, the receptionist is helpful and welcoming, and the prices of the services are affordable. I went in for a tb test.
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Very professional and conscientious
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I love everything e7 health I recommend for everybody
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Friendly staff and efficient service; Elizabeth at Horizon Ridge location, Henderson, was awesome!
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Awesome place! Good people, Great service!
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I love this place. They have locations all over. Very friendly and courteous staff, always professional wearing a smile. Fast, convenient, modern..
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Walk in clinic for basic exams, labs, vaccines (travel and routine). The staff at e7 Health are very friendly and kind, they do their best to get..
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My wife needed a second immigration medical exam for her green card application. We had already waited more than a year for an interview and were..
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