⚠️TSH
5.4 mIU/LAbove the 4.0 upper cutoff. TSH fluctuates with stress, sleep, and time of day — a single elevated value is usually rechecked before any decisions.
Read moreThyroid test analyzer
Thyroid test results explained in plain English
See what your TSH, Free T4, Free T3, and thyroid-related markers mean in the context of your report.
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TSH
2.1 mIU/L
In range · normal
Free T4
1.2 ng/dL
In range
All markers
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Before · After
From TSH + Free T4 + Free T3 to one calm read
Thyroid panels are interpreted as a system. LabTestly explains TSH alongside free hormones and antibodies — not as isolated numbers.
cbc_results.pdfOriginal lab report
Thyroid Panel · Lab Report
| TEST | RESULT | REF |
|---|---|---|
| TSH | 5.4 mIU/L | 0.4–4.0H |
| FT4 | 1.1 ng/dL | 0.8–1.8 |
| FT3 | 3.2 pg/mL | 2.3–4.2 |
| TPO | 38 IU/mL | < 34H |
- What does a TSH of 2.1 mIU/L mean?
- How are TSH, free T4, and free T3 related?
- What do thyroid antibodies (anti-TPO) mean?
- How often should I re-test thyroid hormones?
- What can affect TSH levels?
- How is total T3 different from free T3?
- What does the thyroglobulin level mean?
LabTestly — Plain EnglishPlain-English explanation
🦋Free T4
1.1 ng/dLRight in the middle of normal. Free T4 is the active thyroid hormone available to tissues — interpreted together with TSH.
Read more💚Free T3
3.2 pg/mLInside range. Free T3 is the more potent thyroid hormone — sometimes reviewed alongside Free T4 in nuanced cases.
Read more⚠️TPO antibodies
38 IU/mLJust above the 34 cutoff. Antibody positivity is one signal clinicians use when discussing autoimmune thyroid conditions like Hashimoto's.
Read moreEvery answer is grounded in your uploaded report — for general understanding, not a diagnosis.
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What LabTestly helps you understand
Read your result with calm context
- See TSH, Free T4, and Free T3 together
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Example questions you can ask after uploading
- “What does my TSH result mean?”
- “How do TSH and Free T4 read together?”
- “Which thyroid markers are outside range?”
- “What should I ask my clinician about thyroid results?”
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TSH is the screening test; Free T4 and Free T3 measure circulating thyroid hormones. Some panels also include thyroid antibodies (TPO, Tg) for autoimmune assessment.
TSH is the pituitary’s "signal" to the thyroid — when thyroid output drops, TSH rises. That feedback loop is what makes TSH such a useful screening number.
No. We explain what each marker measures and whether it sits in your lab’s reference range. Diagnosis belongs with a clinician, who may order repeat testing or antibodies.
A clinician decides based on context. Borderline values are often rechecked after a few weeks before changing anything.
No. LabTestly is an educational tool that explains what blood test values mean in plain language. It is not a substitute for professional medical advice, diagnosis, or treatment. We always encourage you to discuss your results with your doctor — every interpretation includes that reminder.
We accept PDFs, JPEGs, PNGs, and WebP files up to 10 MB. This covers printed lab reports, scanned documents, photos taken on your phone, and screenshots from patient portals like MyChart or Quest Diagnostics. If your lab sends a PDF by email, you can upload that directly.
Our AI is trained on medical literature and uses established clinical reference ranges. Interpretations are carefully worded to be educational and accurate. That said, lab values can be affected by many factors — time of day, recent meals, medications — which is why we always encourage a conversation with your doctor for full context.
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We cover most standard blood panels including Complete Blood Count (CBC), Comprehensive Metabolic Panel (CMP), Basic Metabolic Panel (BMP), Lipid Panel, Thyroid function (TSH, T3, T4), Vitamin D and B12, Iron studies, HbA1c, and more. If you upload a panel we don't recognize, we'll tell you.
Absolutely. Every interpretation can be downloaded as a PDF or shared via a secure, expiring link. Many of our users bring their LabTestly summary to appointments as a conversation starter. It's designed to complement — not replace — the doctor-patient relationship.
The free plan includes 1 lab report per month. For most people that is enough if they only test occasionally and just want to understand their results in plain language.
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Other tests we explain in plain English
Often reviewed alongside this one. Each opens its own plain-English landing.
- 🧬 Hormone panelsUpload a thyroid, cortisol, sex-hormone, or full endocrine panel — get a calm, human explanation of every value, no medical jargon.Open landing →
- ☀️ Vitamin D testUpload your report and get a plain-English explanation of your 25-OH Vitamin D result.Open landing →
- 🧪 Comprehensive Metabolic PanelUpload your CMP report and get a plain-English explanation of your metabolic, liver, kidney, electrolyte, and protein markers.Open landing →
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Reviewed by the LabTestly clinical content team · Last updated
This is for general understanding only and does not replace medical advice from your clinician.