Grade: C

MEDIUM RISK

SirenLabs

Item: SirenLabs
Rating: 50
Author: SupplementChecker

Here's the content for the SirenLabs brand profile page on SupplementCheck: **** SirenLabs is a protein supplement brand operating independently. The brand currently lacks third-party testing or GMP certifications. To date, SirenLabs has a clean FDA record, with no warning letters, recalls, or adverse event reports filed. **

SirenLabs Trust Summary

Trust Score: 50/100 (Fair)
Grade: C
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 0

SirenLabs has a trust score of 50/100 (Fair). The brand is not third-party tested by NSF, USP, or Informed Sport, has no FDA recalls on record and no adverse event reports.

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Red Flags

⚠No third-party testing certifications found
⚠No GMP certification visible

Verified Strengths

✓Clean FDA record — no warnings, recalls, or significant adverse events

Certifications

No certifications on record. This brand has not demonstrated GMP compliance or third-party testing verification.

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

Clean record — no FDA warnings, recalls, or significant adverse events.

Is SirenLabs Third-Party Tested?

No — SirenLabs is not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. No GMP certification was found on record either. We recommend looking for brands with verified third-party testing for the highest confidence in product quality. See our guide to third-party tested supplements.

Is SirenLabs a Good Brand?

SirenLabs scores 50/100 (C) — this is a below-average score. We recommend considering brands with third-party certifications like NSF or USP. SirenLabs has a clean FDA record with no warnings or recalls. The brand does not currently hold third-party testing certifications.

About SirenLabs

SirenLabs is a supplement brand in the dietary supplement industry. The company specializes in protein powders and sports nutrition. SirenLabs has a trust score of 50/100 (Grade C), which may indicate areas for improvement in safety or transparency.

Product Specialization

SirenLabs specializes in protein supplements including whey protein isolate, casein, and plant-based protein powders. Their protein products are designed to support muscle building, recovery, and daily protein intake goals for athletes and fitness enthusiasts.

Testing & Certifications Explained

SirenLabs does not appear to have third-party testing certifications from recognized organizations like NSF, USP, or Informed Sport. This means their supplements have not been independently verified for purity, potency, or banned substances. Consumers should be aware that ingredient quality and label accuracy are not externally validated.

How SirenLabs Compares

Within the protein powder market, SirenLabs competes with established brands like Optimum Nutrition, Dymatize, and Isopure. Their trust score of 50/100 shows room for improvement compared to top-tier competitors in third-party testing and regulatory compliance.

Buying Guidance

Given SirenLabs's lower trust score, consumers should exercise caution and consider alternatives with stronger safety records. If purchasing, verify ingredient sources, check for recent lab testing, and consult healthcare providers.

Frequently Asked Questions

Has SirenLabs had any recalls?

No — as of 2026, SirenLabs has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. SirenLabs received a trust score of 50/100 from SupplementChecker.

Are SirenLabs supplements third-party tested?

No — SirenLabs supplements are not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. No independent testing or GMP certification was found on record.

Is SirenLabs safe?

SirenLabs received a trust score of 50/100 (grade: C, risk level: MEDIUM). This score is calculated from FDA records, third-party certifications, adverse event reports, and transparency practices. No FDA warnings or recalls are on record.

Is SirenLabs a good brand?

SirenLabs scores 50/100 (grade: C) — this is below average. We recommend looking for brands with third-party certifications like NSF or USP. They do not currently hold third-party testing certifications like NSF, USP, or Informed Sport. No FDA warnings or recalls found.

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How We Calculated This Score

Every brand starts with a baseline score of 70/100.

Points added for: Third-party certifications (NSF +15, USP +15, Informed Sport +10), publishing lab results (+10), clean regulatory record (+10), 10+ years in business (+10), organic certification (+5).

Points deducted for: FDA warning letters (-25), product recalls (-20), high adverse events (-15), no third-party testing (-15), proprietary blends (-10), no GMP (-10).

Score is capped at 0-100. Grade and risk level are derived from the final score.

All data sourced from FDA.gov, Health Canada (LNHPD / recalls-rappels), NSF.org, USP.org, and publicly available brand information. Last updated: 4/4/2026.

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