Quality Assurance & Certificates of Analysis (COAs)

Our Quality Commitment

Sync Peptides guarantees that each product conforms to its stated identity and minimum purity specification of ≥98% at the time it leaves our facility. Every batch is independently tested by Freedom Diagnostics, a third-party testing laboratory based in Franklin, Tennessee with no vendor affiliations or commercial ties to Sync Peptides. We do not self-certify.

Every Certificate of Analysis we issue includes both HPLC (High-Performance Liquid Chromatography) analysis to confirm purity and LC-MS (Liquid Chromatography–Mass Spectrometry) analysis to confirm identity — we never publish a purity figure without an accompanying identity confirmation.

Understanding Purity vs. Content

These two figures answer different questions, and both appear on our lab reports:

• Purity describes how much of the material in the container is the intended compound itself, versus anything else present.
• Content describes how much of the compound is actually there, compared with the amount stated on the label.

A batch can be highly pure but slightly under the labeled amount, or exactly at the labeled amount but less pure — which is why we report both figures rather than a single number.

Why Results Aren't Always Exactly 100%

Every step of production — synthesis, drying, weighing, and filling — introduces small, normal variation, and every test instrument carries its own margin of accuracy. A result landing a few percent above or below the labeled amount, within an accepted range, is what genuine, unadjusted lab data looks like. We publish results as issued by the testing laboratory, without adjustment.

Our standard acceptance range for labeled content is within ±12% of the stated amount. Individual units or batch samples may show slightly wider variance than the batch average. Results are evaluated against the documented specification and applicable analytical method.

What a COA Includes

Each Certificate of Analysis documents:

• Compound name and lot/batch number
• Analytical method used (HPLC for purity, LC-MS for identity)
• Purity and content results
• Issuing laboratory name and credentials (Freedom Diagnostics)
• Date of analysis

Always confirm that the lot number on your product matches the lot number on the COA you're reviewing — results are lot-specific, not product-wide.

How to Find or Request a COA

• Every COA we receive from Freedom Diagnostics is published to a searchable database hosted directly on our site — look up any result by product name or lot number without leaving our site.
• If you can't locate documentation for your specific lot, email support@syncpeptides.com with the product name and lot number from your label, and we'll send it directly.

Storage and Shelf Life

Proper storage affects product stability and is a condition of our quality guarantee. General guidance:

• Store sealed, away from direct light, at the temperature noted on the product label.
• Lyophilized research materials may have different short- and long-term laboratory storage requirements; follow the product label and lot-specific documentation.
• After a material is opened or prepared in a laboratory solution under a validated research protocol, stability may differ from the sealed material. Refer to the product-specific analytical documentation.
• Shelf life is generally up to 12 months from the manufacture date when stored correctly and left sealed; opening the container or preparing the material in a laboratory solution may change its stability profile.

We are not able to guarantee stability for product that has been opened, transferred to another container, or stored outside the conditions listed on the label.

Submitting a Quality Claim

If independent laboratory testing indicates that a research material may be out of specification, submit the documentation for review. To be considered under our Quality Guarantee, a claim must meet the following:

1. Submitted within 60 calendar days of delivery, based on carrier tracking records.
2. Product within its labeled shelf life at the time of testing, with the lot number matching your original label and invoice.
3. Tested by a qualified analytical laboratory using a validated method suitable for the compound (HPLC, LC-MS, NMR, or equivalent) — simple colorimetric or visual assessments are not sufficient.
4. A complete lab report, including the lab's name and contact information, method used, sample receipt and analysis dates, the purity/content result, and a chromatogram or spectrum where applicable.
5. A documented chain of custody — the tested sample must come directly from the original Sync Peptides container, labeled with product name, lot number, and the date it was transferred for testing.
6. Analysis timing. No fixed sample-analysis holding period is imposed as a condition of a quality claim unless required by applicable law. The laboratory report should identify the sample receipt and analysis dates so the result can be evaluated in context.

How to Submit

Email support@syncpeptides.com with your order number, product name, lot number, a short description of the issue, and the complete lab report described above. We typically provide a preliminary assessment within 24–48 hours, and may request the remaining product be returned as part of the review.

If a Batch Is Confirmed Out of Specification

We will provide, at our discretion:

• A replacement from a different lot, or
• An account credit toward the purchase price. Third-party testing costs are not reimbursed unless Sync Peptides authorized the expense in writing before the testing was performed.

Our obligation under this guarantee is limited to replacement, account credit, and third-party testing costs expressly authorized by Sync Peptides in writing before testing — we're not able to cover downstream or consequential research costs.

When a Claim May Not Be Accepted

We may decline to base a decision on third-party results if: the claim falls outside the 60-day window; the product is past its labeled shelf life; the sample condition or documented handling materially undermines the reliability of the result; storage appears inconsistent with the product's known stability profile; the testing method was inadequate to characterize the product; or chain of custody cannot be reasonably established.

A Note on Research Use

All Sync Peptides products are supplied strictly for laboratory and research use. We test and report on identity and purity — we do not evaluate, and cannot speak to, safety or efficacy for any use in or on the human or animal body. Questions about analytical specifications, lot documentation, or testing methodology are always welcome; questions about dosing, administration, or personal use are outside what our team is able to discuss. See our FAQ for more on this.

Questions?

Email support@syncpeptides.com — our team can help with COAs, testing methodology, or quality claims.