Strange thyroid level in blood test

I had a general lab workup recently, and all test results were normal, other than my T4 level, which was 13.3. My T3 was 208, and my TSH 3rd generation was 1.50. I've never heard of having only abnormal T4 result.
I am 43 and have had a chronic, low-grade fever with some night sweats, increasing fatigue (making it hard to function), swollen axillary lymph nodes without any sign of infection,abdominal tenderness -- but no weight loss. My heart rate and blood pressure have gone from low normal (110/70) to high (146/90) in the six weeks. Waiting to get into a doctor, but feeling worse every day. Any ideas?

[Dr. Kokil Mathur]

Hi
Welcome to the forum!
“Total T4 and free T4 are two separate tests that can help the doctor evaluate thyroid function.----- Since free T4 is the active form of thyroxine, it is thought by many to be a more accurate reflection of thyroid hormone function and, in most cases, its use has replaced that of the total T4. Both decreased and increased T4 results are associated with a variety of temporary and chronic thyroid conditions.” Onlt T4 rising is not significant for diagnosis.
“Many medications—including estrogen, certain types of birth control pills, and large doses of aspirin—can affect total T4 test results”
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!
Refer: http://www.labtestsonline.org/understanding/analytes/t4/test.html