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low ft4 normal tsh

A 34-year-old female asked:
Dr. Kathleen Saradarian
33 years experience Family Medicine
Normal thyroid: A normal TSH means your body knows that your thyroid is normal.
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Dr. Gurmukh Singh
48 years experience Pathology
Need more info: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. ... Read More

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A member asked:
Dr. Alan Feldman
40 years experience Endocrinology
Probably not: The normal range is based on large population studies. The normal range for any individual is much more narrow. The TSH is usually the most sensitiv ... Read More
A 34-year-old female asked:
Dr. Quang Nguyen
Specializes in Endocrinology
No significance: T3 (liothyronine) uptake is an old test used to indirectly measure t4. Now that we have assay to accurate measure free t4, we don't use this test any ... Read More
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Dr. Keegan Duchicela
13 years experience Family Medicine
May be insignificant: T3 (liothyronine) uptake looks at the availability of proteins in the blood to carry t3 (liothyronine). A low value may be clinically insignificant i ... Read More
A 66-year-old male asked:
Dr. Joseph Woods
27 years experience Pathology
More info needed,,: Your ft4 is low and you're on thyroxine, so that's an indication that your thyroid was apparently hypo functioning, at least without the thyroxine. T ... Read More
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A 34-year-old female asked:
Dr. David Geffner
53 years experience Endocrinology
No: Borderline low with no symptoms would suggest your endocrinologist could do a Cortrosyn stim test.
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A 28-year-old female asked:
Dr. Thomas Knecht
A Verified Doctor answered
A US doctor answered Learn more
Reproducible?: Hi. Is the lab profile with normal TSH and low free T4 reproducible? The labs should be repeated. If the free T4 was just below the normal range, and ... Read More
A 43-year-old member asked:
Dr. Joseph Woods
27 years experience Pathology
Not sure if any.: The TSH is normal so it might be a variation of normal or euthyroid. It also might be a developing thyroid condition, but there would be symptoms, li ... Read More
A 36-year-old member asked:
Dr. Gurmukh Singh
48 years experience Pathology
See below: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. ... Read More
A 42-year-old female asked:
Dr. Gurmukh Singh
48 years experience Pathology
Need more info: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. ... Read More
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A 25-year-old female asked:
Dr. A. tarig Ahmed
14 years experience Internal Medicine
Thyroid function: When TSH is normal and T4 is low this is called subclinical hypothyroidism. It is not treated unless if you have symptoms. Also if TSH > 10 some w ... Read More

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