British Dragon Testabol Depot 250 is a testosterone cypionate injectable formulation designed to deliver stable and consistent dosing. As a long-acting ester, accurate concentration is important for maintaining predictable release and reliable batch quality.
Below is the latest independent lab test verifying the potency of Testabol Depot 250, conducted by a trusted third-party laboratory.
Latest Lab Result (2026)
Janoshik Lab Report – 2026-03-23
- Product: Testabol Depot 250
- Active Substance: Testosterone Cypionate
- Manufacturer: British Dragon
- Labeled Dosage: 250 mg/mL
- Result: 276.21 mg/mL
- Laboratory: Janoshik
This lab test shows a measured concentration of 276.21 mg/mL, above the labeled 250 mg/mL dosage. This result indicates a moderate positive deviation and a consistent overfill.
Potency Analysis
- Labeled dosage: 250 mg/mL
- Measured dosage: 276.21 mg/mL
- Deviation: ~+10.5%
- Laboratory: Janoshik
The measured result shows a noticeable positive deviation from the labeled dosage. For injectable formulations, moderate overfill can be used to ensure that the product maintains its labeled potency throughout its shelf life.
About Testabol Depot 250
Testosterone Cypionate is a long-acting ester widely used in injectable formulations requiring stable release. Maintaining accurate concentration is important for consistent delivery and predictable dosing across batches.
Independent lab testing provides confirmation of actual measured potency and helps evaluate batch quality.
Conclusion
The available lab test for British Dragon Testabol Depot 250 shows a measured concentration of 276.21 mg/mL, exceeding the labeled 250 mg/mL dosage. This result indicates a moderate positive deviation and confirms the presence of a consistent overfill in the tested batch.
For additional formulation details and specifications, the official Testabol Depot 250 overview provides further information.
Frequently Asked Questions
The lab test shows a measured concentration of 276.21 mg/mL, which is above the labeled dosage.
The measured result is approximately 10.5% above the labeled dosage.
The available report was conducted by Janoshik.
Currently, only one lab test is available. Additional reports would help evaluate consistency across batches.

