How We Rank Suppliers: Complete Methodology

Last Updated: December 2025

We rank peptide suppliers using a rigorous 12-criteria framework developed over three years of research, testing, and supplier analysis. This page explains exactly how we evaluate vendors, calculate scores, verify information, and maintain objectivity.

No black boxes. No hidden agendas. Just transparent methodology you can trust.

Our 12-Criteria Framework (Complete Breakdown)

Every supplier we rank is evaluated against 12 specific criteria. Each criterion has defined parameters, measurable indicators, and weighted importance in the final score.

1. Third-Party Testing (Weight: 20%)

What We Measure:

Scoring Scale:

Why It's Weighted Highest: Product purity and authenticity are non-negotiable. Third-party testing is the only objective way to verify what's actually in the vial.

2. Product Purity Standards (Weight: 15%)

What We Measure:

Scoring Scale:

3. Source Transparency (Weight: 12%)

What We Measure:

Scoring Scale:

4. Customer Service Quality (Weight: 10%)

What We Measure:

Scoring Scale:

5. Shipping Reliability (Weight: 9%)

What We Measure:

Scoring Scale:

6. Pricing and Value (Weight: 8%)

What We Measure:

Scoring Scale:

7. Product Selection (Weight: 7%)

What We Measure:

Scoring Scale:

8. Company Reputation (Weight: 6%)

What We Measure:

Scoring Scale:

9. Website and Ordering Experience (Weight: 5%)

What We Measure:

Scoring Scale:

10. Return and Refund Policy (Weight: 4%)

What We Measure:

Scoring Scale:

11. Educational Resources (Weight: 2%)

What We Measure:

Scoring Scale:

12. Legal Compliance (Weight: 2%)

What We Measure:

Scoring Scale:

Source Verification Process

We verify every claim suppliers make. Here's how:

Step 1: Direct Documentation Review

Step 2: Independent Lab Verification

Step 3: Customer Experience Sampling

Step 4: Test Purchases

Step 5: Ongoing Monitoring

Testing Methodology

While we don't operate our own laboratory, we validate supplier testing through a systematic approach:

COA Validation Protocol

Document Authentication:

Technical Review:

Pattern Analysis:

Third-Party Testing Partnerships

For select high-priority reviews, we commission independent testing through:

Testing Criteria:

Rating Calculation Formulas

Here's the exact math behind our supplier scores:

Overall Score Calculation

Overall Score = Σ (Criterion Score × Criterion Weight)

Where:
- Criterion Score = Raw score (0-100) for each criterion
- Criterion Weight = Percentage weight assigned to criterion
- Σ = Sum of all weighted criterion scores

Example Calculation:

Supplier X:
Third-Party Testing: 90 × 0.20 = 18.0
Product Purity: 95 × 0.15 = 14.25
Source Transparency: 85 × 0.12 = 10.2
Customer Service: 80 × 0.10 = 8.0
Shipping Reliability: 88 × 0.09 = 7.92
Pricing and Value: 75 × 0.08 = 6.0
Product Selection: 70 × 0.07 = 4.9
Company Reputation: 92 × 0.06 = 5.52
Website Experience: 85 × 0.05 = 4.25
Return Policy: 80 × 0.04 = 3.2
Educational Resources: 65 × 0.02 = 1.3
Legal Compliance: 100 × 0.02 = 2.0

Overall Score = 85.54/100

Tier Classification

Suppliers are placed into tiers based on overall scores:

Automatic Disqualifiers:

Confidence Rating

Each supplier review includes a confidence rating based on data quality:

Confidence Score = (Data Points Verified / Total Data Points) × 100

High Confidence: 80%+ data points verified
Medium Confidence: 60-79% data points verified
Low Confidence: Below 60% data points verified

Data points include:

Update Protocols

Supplier rankings are living documents. Here's our update schedule:

Quarterly Reviews (Every 3 Months)

Semi-Annual Deep Dives (Every 6 Months)

Real-Time Monitoring

Triggered Updates

Immediate re-evaluation occurs when:

Update Publication:

Conflict of Interest Management

Trust requires transparency about our business model and potential conflicts. Here's exactly how we maintain objectivity:

Revenue Model Disclosure

How We Make Money:

How We DON'T Make Money:

Editorial Independence Policy

Strict Separation:

Affiliate Disclosure Protocol:

Testing and Review Integrity

Blind Evaluation Process:

No Pay-for-Play:

Transparency Commitments

What Happens When We Get It Wrong

If we make an error in ranking or review:

Limitations and Disclaimers

Complete transparency means acknowledging what we can't do and what you should know:

What Our Rankings Can't Tell You

Individual Product Testing:

Personal Response:

Legal Status:

Future Performance:

Research Context

Not Medical Advice:

Research Chemical Status:

Methodology Limitations

Sample Size:

Time Constraints:

Information Access:

Data Source Limitations

Customer Reviews:

Lab Testing:

Supplier Information:

Use This Information Responsibly

Our rankings are one input for your decision-making, not the only input. Consider:

Do Your Own Research:

Feedback and Challenges

We're committed to continuous improvement. If you:

Contact us: We respond to all substantive feedback and update rankings when presented with credible new information.

Transparency is a two-way street. We show you how we work—and we expect you to hold us accountable when we fall short.

Last Updated: December 2025 | Next Scheduled Review: March 2026

This methodology document itself is subject to improvement. If we discover better ways to evaluate suppliers, we'll update this page and clearly indicate what changed and why.