Thyroid Function Interpreter

Thyroid Function Interpreter

Thyroid Function Interpreter

TSH  ·  Free T4  ·  Free T3 Pattern Analysis  ·  ATA/ETA Guidelines  ·  India-specific ranges

♥ Endocrinology Pack
Enter your thyroid test results
mIU/L (normal: 0.4 – 4.0) Required
pmol/L (normal: 12 – 22) or ng/dL (0.93 – 1.70)
pmol/L (normal: 3.5 – 6.5) or pg/mL (2.3 – 4.2)
Units & patient context
pmol/L
ng/dL
pmol/L
pg/mL
Female
Male
Clinical context — important for interpretation
Indian reference ranges: TSH 0.4–4.0 mIU/L. Free T4 12–22 pmol/L (0.93–1.70 ng/dL). Free T3 3.5–6.5 pmol/L (2.3–4.2 pg/mL). Note: Reference ranges vary between laboratories. Always compare with the reference range printed on your own report. TSH alone is the most reliable single screening test.
Thyroid StateTSHFree T4Free T3
Euthyroid (Normal)0.4 – 4.0 mIU/LNormalNormal
Subclinical Hypothyroid> 4.0, < 10NormalNormal
Overt Hypothyroid≥ 10LowLow or normal
Subclinical Hyperthyroid< 0.4NormalNormal
Overt Hyperthyroid< 0.1HighHigh
T3 Toxicosis< 0.1NormalHigh
Central HypothyroidLow or normalLowLow or normal

Please enter a TSH value to generate the interpretation.

mIU/L TSH
TSH spectrum — where your result sits
Overt HyperSub-HyperNormal (0.4–4.0)Sub-Hypo (4–10)Overt Hypo (>10)
TSH
Ref: 0.4–4.0
Free T4
Ref: 12–22 pmol/L
Free T3
Ref: 3.5–6.5 pmol/L
Thyroid state
Pattern interpretation
Treatment & medication guidance
Monitoring schedule & next steps
Special consideration
Clinical flags
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ⓘ  For educational purposes only. Not a substitute for physician judgment. Reference ranges based on ATA 2012/2019 guidelines, ETA 2013/2022 guidelines, and ICMR/API recommendations for Indian laboratories. TSH reference ranges may vary between laboratories and assay methods — always compare with the ranges printed on your own report. Subclinical thyroid dysfunction requires clinical correlation before treatment decisions are made. Interpretation changes significantly in pregnancy, post-partum, severe illness, and with certain drugs.
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