How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Dr. Thomas, MD Your Own Question
Dr. Thomas, MD
Dr. Thomas, MD, Board Certified Physician
Category: Medical
Satisfied Customers: 63757
Experience:  Internal Medicine--practice all of internal medicine, all ages, family, also Integrative, CAM, etc
Type Your Medical Question Here...
Dr. Thomas, MD is online now
A new question is answered every 9 seconds

Ive been running a low grade fever for almost 3 months now.

Customer Question

I've been running a low grade fever for almost 3 months now. My doc did all kinds of labs (including autoimmune labs which were negative) and all of my CBC's have come back normal for the most part. He FINALLY tested me for Mono 2 weeks ago after being sick all this time. When the test came back, they told me I have Mono, but then when I asked if it was active Mono, they said they didn't think so. I then faxed my results to a family friend (an ER doc) and he said it looked like I had it, but might be in the convalescence phase right now but he wasn't 100% sure as he's not used to reading EBV lab results. Well I'm still running a low grade fever and feel yucky. From my results below, do you think that Mono is what has had me down for the last 3 months? I've felt extremely tired, achy, but have NOT had the sore throat and no swollen lymph nodes that I could tell the entire time. I'm being told to wait this out, but don't want to wait if it's not Mono and could be something else- it's driving me crazy wondering!!! Also, do you still run a fever in the convalescence phase (I am)?
Here are my labs:

EBV Panel Interpretive Table:
Never infected - - - -
Acute Infection + + +/- -
Convalescence + +/- + +/-
Recent Past Infect + - +/- +
Remote Past Infect + - - +
Chronic Infect + - + +/-

EBV Early AG IgG <5.0 (Normal range 600.0 (High) (Normal range <18.0)

EBV VCA IgG 71.7 (High) (Normal range <18.0)

EBV VAC IgM <10.0 (Normal range <36.0)

Comprehensive Metabloic Panel labs all normal except:
Albumin 5.2 (H)
Lymphocytes 13 (L)
Neutrophils 82 (H)
Hemaocrit 45.1 (H)
WBC 9.8- Normal

Other testing I've had is an EGD for mild upper left ABD pain below ribs- came back normal but it feels like it's in my rib bones themselves for some reason
H Pylori testing- negative
ABD US- normal
Sinus testing with CT- no infection
Chest Xray- normal

What I want to know:
1) Does it look like Mono was most likely my problem this whole time?
2) Should I wait this out even though I'm still running a low grade fever each day?
3) Should I have anything else tested?
4) Can you still run a fever in the convalescence period with Mono or EBV?
5) My first doc put me on Cipro 500mg BID bec from my CMP he said I had a bacterial infection, but the family friend doc said he didn't see any indication for antibiotic use from my labs. Do you see a reason for the antibiotic use from the labs I've listed?

Thank you :)
Submitted: 4 years ago.
Category: Medical
Expert:  Dr. Thomas, MD replied 4 years ago.
Hello from JA
This is not acute mono
IgM is negative, so you are beyond any acute stage.

Is this all the results for mono you have?
Customer: replied 4 years ago.

Yes, those are all of the results.

So, if I'm still running a low grade fever, would you think something else is going on?

Customer: replied 4 years ago.

I'm sorry, I forgot to add that the EBV Nuclear Antigen IgG was >600 (high)

Expert:  Dr. Thomas, MD replied 4 years ago.
And your early antigen is unclear
YOu have it as positive and negative
Customer: replied 4 years ago.

Sorry, the results showed up somewhat skewed:


EBV Early AG IgG <5.0


EBV Nuclear Antigen IgG >600 (high)


EBV VCA IgG 71.7 (high)


EBV VCA IgM <10.0

Expert:  Dr. Thomas, MD replied 4 years ago.
This is old mono
You dont have active mono at this point
Is this what you are asking?
Customer: replied 4 years ago.

So would it be safe to say that's probably not what's causing my low grade fever for the last 3 months?


Would you suggest additional testing? If so, what would you check next?

Expert:  Dr. Thomas, MD replied 4 years ago.
It depends when you had the mono.
IgM can dissapear after 6 weeks.
So if you are getting better now it still could be the mono
But you never had a monospot test, so hard to say
What symptoms remain?
Customer: replied 4 years ago.

I'm still running a low grade fever each day (99.5-100). I feel tired and achy all the time. I have rib pain on my left side- it feels like bone pain though.

Expert:  Dr. Thomas, MD replied 4 years ago.
You need to get a specific test called early antigen D antibody.
If this is positive you might still be having mono symptoms.

Otherwise it is not related to mono.

Let me know if you have further questions. Just use reply if you are not done.

Please rate one of the positive ratings: the only way we are compensated for time and expertise. If you are not done or satisfied, use reply to expert [not poor/negative]. Come back anytime. Bonuses are great…but your satisfaction is my goal.

Future questions? Ask for DrThomas in the question title or see my profile to request me. Save my profile to your browser favorites

Dr. Thomas, MD and 6 other Medical Specialists are ready to help you
Customer: replied 4 years ago.
Is that different than the EBV early AG IgG?
Expert:  Dr. Thomas, MD replied 4 years ago.
Yes it is
It has to be special ordered.