Thyroid Profile

Clinical purpose, normal range, and interpretation of Thyroid Profile lab results.

Clinical Confidence

Verified by Dr. Narayan Jethwani, MD (Hom)

Core

Quick Reference Facts

Specimen TypeVenous Blood (Serum)
PreparationFasting optional unless ordered with lipid panel
Turnaround Time24–48 Hours
Clinical CategoryThyroid

Laboratory Interpretation Workflow

Stage 1 of 5

1. Clinical Indication

Ordering protocols based on clinical indications, presenting symptoms, or screening guidelines.

Clinical Pearl: Order when screening for primary organ dysfunctions or monitoring active treatment efficacy.

Test Description & Overview

THYROID PROFILE: A specialized laboratory marker or endocrine hormone measurement used to evaluate thyroid gland function, metabolic control, and autoimmune thyroid activity.

Standard Reference Range

TSH: 0.45 - 4.5 uIU/mL; Free T4: 0.8 - 1.8 ng/dL; Free T3: 2.3 - 4.2 pg/mL; Anti-TPO: < 9.0 IU/mL.

Elevated (High) Values

  • Primary hypothyroidism (elevated TSH)
  • Thyrotoxicosis or Graves' disease (elevated Free T4/T3)
  • Active autoimmune thyroiditis (elevated Anti-TPO / Anti-Tg)

Decreased (Low) Values

  • Hyperthyroidism or secondary hypothyroidism (low TSH)
  • Overt hypothyroidism (low Free T4/T3)
  • Non-thyroidal illness syndrome

Clinical Alignment & Significance

THYROID PROFILE evaluation: Elevated TSH with low Free T4 indicates primary hypothyroidism. Conversely, low TSH with high Free T4/T3 confirms hyperthyroidism. Elevated Anti-TPO indicates autoimmune thyroid disease.

Diagnostic Guidance Notice

Standard laboratory reference ranges vary based on the testing facility. Significant deviations require immediate clinician review to rule out severe medical pathology.

Reference Citations & Evidence Sources

Clinical Guidelines & Consensus Statements
  • CIT-0012Jonklaas J., Bianco A. C., Bauer A. J., et al.. "Guidelines for the Treatment of Hypothyroidism: Prepared by the American Thyroid Association Task Force on Thyroid Hormone Replacement." Thyroid (2014).DOI PubMed
  • CIT-0013Garber J. R., Cobin R. H., Gharib H., et al.. "Clinical Practice Guidelines for Hypothyroidism in Adults: Cosponsored by the American Association of Clinical Endocrinologists and the American Thyroid Association." Endocrine Practice (2012).DOI PubMed
  • CIT-0014Demers L. M., Spencer C. A.. "Laboratory Medicine Practice Guidelines: Laboratory Support for the Diagnosis and Monitoring of Thyroid Disease." National Academy of Clinical Biochemistry (NACB) (2002).

AI & Generative Search Citation Block

Entity IDL0022
Entity Typelab-test
Content Versionv1.0.0
Last Reviewed DateJul 8, 2026
Evidence LevelTraditional-Literature
Suggested Academic/LLM Citation format (AMA Style)

Dr. Narayan Jethwani. "Thyroid Profile." Homeo Healthcare Clinical Platform. Version 1.0.0. Reviewed: 2026-07-08T12:00:00Z. Available at: https://homeo.healthcare/knowledge/lab-tests/thyroid-profile

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