British Dragon T3 contains Liothyronine Sodium in oral tablet form, labeled at 25 mcg per tablet. For low-dose thyroid hormone products, independent lab testing is especially important because even modest deviations can have a significant impact on real-world dosing accuracy.
Below is the latest available lab test confirming the measured content of T3 25 mcg, conducted by a trusted third-party laboratory.
Latest Lab Result (2026)
Janoshik Lab Report – 2026-03-24
- Product: T3
- Active Substance: Liothyronine Sodium
- Manufacturer: British Dragon
- Labeled Dosage: 25 mcg/tablet
- Result: 13.75 mcg/tablet
- Laboratory: Janoshik
This lab test shows a measured content of 13.75 mcg per tablet, which is significantly below the labeled 25 mcg dosage. The result indicates a substantial negative deviation from the stated amount.
Potency Analysis
- Labeled dosage: 25 mcg
- Measured dosage: 13.75 mcg
- Deviation: ~-45%
- Laboratory: Janoshik
The measured result shows that this batch tested well below the labeled dosage. For low-dose tablet formulations such as Liothyronine Sodium, this is a meaningful variance and should be interpreted accordingly.
About T3 (Liothyronine Sodium)
Liothyronine Sodium is a thyroid hormone compound commonly produced in microgram-strength oral tablets, where manufacturing precision is especially important. Because the labeled dosage is small, independent testing provides an important check on actual active substance content per tablet.
Lab verification supports transparency by showing how closely a specific batch matches its intended formulation.
Conclusion
The available lab test for British Dragon T3 25 mcg shows a measured dosage of 13.75 mcg per tablet, which is substantially below the labeled amount. This result indicates a significant underdose in the tested batch.
As only one report is currently available, additional lab tests would be helpful in determining whether this result reflects a broader batch consistency issue or an isolated case.
Frequently Asked Questions
The available lab test shows 13.75 mcg per tablet, which is well below the labeled 25 mcg dosage.
The measured result is approximately 45% below the labeled dosage.
The available lab report was conducted by Janoshik, an independent laboratory.
Currently, only one lab test is available. Additional reports would help clarify consistency across batches.

