[MCOH-EH] QuantiFERON Gold Testing

[Nancy Rodway]

Exactly.  Thank you.   I wasn't thinking!  The IGRA itself needs no duplicate and is not immunoactive.


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From: MCOH-EH <mcoh-eh-bounces at mylist.net> on behalf of Swift, Melanie D., M.D. via MCOH-EH <mcoh-eh at mylist.net>
Sent: Friday, May 10, 2019 2:20 PM
To: MCOH/EH
Cc: Swift, Melanie D., M.D.
Subject: Re: [MCOH-EH] QuantiFERON Gold Testing


Nancy, it may have been a typo, but just to clarify for the list members, having blood drawn for an IGRA does not serve as “step one” of a 2-step TST. There is no anamnestic immune response triggered by having phlebotomy done.



However the opposite is true – having a TST placed can provide a booster effect on IGRA levels, starting about 3 days after placement and lasting several months. (BTW I don’t think this is a bad thing, as it should only “boost” immune memory to provide a true response. It won’t give a false positive in someone who was truly never exposed, so the IGRA would still be valid.)





Melanie



Melanie Swift, MD
Medical Director, Mayo Clinic Physician Health Center

Senior Associate Consultant

Assistant Professor of Medicine

Division of Preventive, Occupational, and Aerospace Medicine

Phone 507.284.2560

_______________________________
Mayo Clinic
200 First Street SW
Rochester, MN 55905
www.mayoclinic.org<http://www.mayoclinic.org/>





From: MCOH-EH [mailto:mcoh-eh-bounces at mylist.net] On Behalf Of Nancy Rodway
Sent: Friday, May 10, 2019 9:09 AM
To: MCOH/EH
Subject: [EXTERNAL] Re: [MCOH-EH] Quanteferon Gold Testing



  1.  we always perform a new quant test as the TB exposure could have been recent.  You can use the Quant within the last year as "step one" if you perform TST.  Or, just ignore it and repeat Quant as it = 2 step TST  testing

  1.  annual testing is a function of the local risk.  My hospital is in a low TB risk county so we do not perform annual testing.  We perform post-exposure testing, of course

Nancy Rodway MD MPH FACOEM





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From: MCOH-EH <mcoh-eh-bounces at mylist.net> on behalf of Deborah A. Pruim via MCOH-EH <mcoh-eh at mylist.net>
Sent: Friday, May 10, 2019 9:50 AM
To: MCOH/EH (mcoh-eh at mylist.net)
Cc: Deborah A. Pruim
Subject: [MCOH-EH] Quanteferon Gold Testing



Hello,

I have a couple of questions on Quanteferon Testing..

1.        How far back do you accept QG tests for new hires (1 yr, 2 yrs, 5 years, etc)

2.        Do you require annual QG testing for employees or only testing upon exposure?

Thanks in advance for your response!

Debbie

Deborah Pruim, RN, MSN, APN, CNS

Employee Health Services

Little Company of Mary Hospital

2800 W. 95th Street

Evergreen Park, IL  60805

Monday – Friday

6:30am-3pm

Phone:  708-229-5623

Fax:  708-229-6618

dpruim at lcmh.org<mailto:dpruim at lcmh.org>

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