How to Read Your Intex Pharma Certificate of Analysis — Step by Step
Published: June 2026 · Category: Guides · 7 min read
Every product on the Intex Pharma UK store comes with a Certificate of Analysis available in the product gallery before you buy. The COA is produced by Janoshik Analytical, an independent third-party testing laboratory in the Czech Republic widely regarded as the gold standard for steroid and peptide verification in the European community. Understanding what each section of the COA actually means — and how to verify it independently — gives you complete confidence in what you are using before you use it. This guide walks through every field on an Intex Pharma Certificate of Analysis, step by step.
What a Certificate of Analysis is and why it matters
A Certificate of Analysis is a formal document issued by a testing laboratory that records the results of quality control tests performed on a specific batch of a compound. As Amino Foundry's COA guide explains, the document includes the compound name, batch number, manufacturing date, molecular formula, molecular weight, and the results of analytical testing including identity confirmation, purity determination and concentration measurement. Crucially, every number on a legitimate COA corresponds to a specific, traceable test run on a specific production batch — not a generic template reused across products.
The COA matters for two distinct reasons. First, it tells you what is in the vial or tablet you are holding. Second, it gives you a reference point against which to assess your own results — if your bloodwork or physical response does not match what the COA describes, either the product has degraded through mishandling, you received a counterfeit, or individual variation is at play. Swolverine's 2025 guide on identifying fake steroids notes that roughly 36 per cent of black-market anabolic steroids are counterfeit and an additional 37 per cent are substandard. In that context, a verifiable third-party COA is not a nice-to-have feature — it is the minimum standard for anything you plan to use.
Section one — identification information
The top section of the Intex Pharma COA identifies exactly what was tested and when. Every field in this section should match the product you received.
Must match the compound name on your product label exactly. For example, "Testosterone Enanthate" rather than a generic reference to "testosterone". Any discrepancy between the COA product name and your label is a serious warning sign.
This is the most important identification field. The batch number on the COA must match the batch number printed on your product label or packaging. Without this match, the COA does not apply to your specific product — it may have been generated for a completely different production run. Path to Peptides' COA verification guide notes that generic COAs reused across batches are one of the most common forms of documentation fraud.
The date the laboratory conducted the analysis. Industry standards recommend COA test dates within six months of the product batch being released. Intex Pharma batches are tested on production and the COA is updated with each new batch, so the date on the product page gallery should correspond closely to the batch you received.
The Intex Pharma COA is issued by Janoshik Analytical. The laboratory name, contact information and report reference number are displayed on every COA. A COA without a named, identifiable testing laboratory cannot be verified and should not be trusted.
A unique alphanumeric code that allows you to look up the test result directly on Janoshik's own website at janoshik.com/verify. This is the most important field for independent verification. Entering this key on Janoshik's site retrieves the original test record directly from the laboratory's own database — entirely independently of Intex Pharma.
Section two — HPLC purity result
The purity result is the field most buyers look at first, and it is expressed as a percentage. However, understanding exactly what it measures — and what it does not — helps you interpret it correctly.
What HPLC purity means
HPLC stands for High-Performance Liquid Chromatography. It works by dissolving the sample and passing it through a column under pressure, separating the components based on their chemical properties. A UV detector measures each component as it exits the column, producing a chromatogram — a graph of peaks where each peak represents a compound. Peptides Lab UK's 2026 HPLC interpretation guide explains that the purity percentage represents the area of the target compound's peak divided by the total area of all UV-absorbing peaks. In simple terms, it tells you what proportion of the testable organic content is the compound you ordered, versus impurities from synthesis by-products or related substances.
What purity benchmarks mean
Research grade. This is the standard demanded by reputable suppliers and the benchmark used by Intex Pharma. At 98 per cent and above, impurity levels are low enough to have negligible impact on compound behaviour or safety.
Acceptable but not optimal. Impurities are present at a level that warrants attention, particularly for sensitive applications. Intex Pharma products consistently test above this range.
Below research grade. Impurity levels are significant. A product testing below 95 per cent should not be considered pharmaceutical-grade regardless of how it is marketed.
Red flags in the HPLC result
Path to Peptides' COA verification checklist flags several warning signs in HPLC data that suggest the results may not be genuine. A purity value of exactly 99.00 per cent or 98.00 per cent — a perfectly round number — is statistically unlikely from a real instrument. Authentic HPLC results show decimal precision such as 98.73 per cent or 99.14 per cent. Additionally, identical results across different batches of the same product suggest the data has been copied rather than measured. Real batches always produce slightly different results because no two production runs are perfectly identical.
Section three — mass spectrometry identity confirmation
HPLC tells you how pure the sample is. Mass spectrometry (MS) tells you what the compound actually is. This distinction is critical. As Honest Peptide explains in their COA interpretation guide, a peptide missing one amino acid may appear 99 per cent pure on HPLC, but would be 0 per cent the desired peptide. Mass spectrometry is the only reliable way to confirm identity. Most reputable third-party testers including Janoshik provide both MS and HPLC in a single test.
How to read the mass spectrometry result
The MS section of the COA shows the observed molecular mass of the compound and compares it to the theoretical molecular mass of the substance claimed on the label. Amino Foundry's analytical standards guide specifies that the observed mass should agree within 0.5 Da for high-resolution instruments or 1 Da for standard instruments. If the observed mass matches the theoretical mass within this tolerance, the compound's identity is confirmed. If it does not match, the sample contains a different compound than labelled — regardless of how high the HPLC purity figure reads.
In practical terms, when you look at this section of your Intex Pharma COA, you are looking for two things. The theoretical molecular weight of the compound should match published reference values — for example, Testosterone Enanthate has a molecular weight of 400.59 g/mol. The observed mass from the test should match this value within the tolerance stated above. If both numbers agree, identity is confirmed.
Section four — concentration result
The concentration section confirms how much active compound is present per ml (for injectables) or per tablet (for orals), compared to the labelled amount. This is the field that confirms whether a product is correctly dosed.
Industry standards state that concentration should be within 5 to 10 per cent of the stated dose to be considered correctly labelled. Janoshik's testing carries a standard margin of error of up to 5 per cent, which is normal for this type of analytical method. Therefore, a product labelled at 300mg per ml testing at 285mg per ml is within acceptable tolerance. A product labelled at 300mg per ml testing at 210mg per ml is significantly underdosed and should not be used.
If your mid-cycle bloodwork shows unexpectedly low testosterone levels at a given dose of Intex Pharma product, cross-reference the concentration result on your COA with the batch number from your vial. If the COA shows correct concentration but your bloodwork does not reflect it, contact us on WhatsApp at +44 7882 742370 with your batch number and we will investigate immediately.
How to verify your Intex Pharma COA on Janoshik directly
This is the most important step in the entire verification process, and it takes less than two minutes. Every Intex Pharma COA includes a verification key — a unique code that retrieves the original test record directly from Janoshik's own database. When you enter this key on Janoshik's website, you are not relying on Intex Pharma at all. You are going to the source.
Go to the product page on intexpharmaresearch.uk for the product you purchased. Open the product gallery. The COA is the first image.
Locate the batch number on the COA and check it matches the batch number on your product label or packaging.
Find the verification key on the COA. Go to janoshik.com/verify and enter the key. The result that appears comes directly from Janoshik's own database and is entirely independent of Intex Pharma.
Compare the product name, purity, concentration and identity confirmation on Janoshik's result with what is shown on the COA in the product gallery. If they match, your product is verified. If the key returns no result or a different result, contact us immediately before using the product.
You can also browse all public Intex Pharma test results at public.janoshik.com, where Janoshik hosts results from all tests it has conducted that suppliers have elected to make publicly available. This allows you to search by supplier name and cross-reference results independently of the verification key system.
Red flags on a COA that indicate it may be fake or invalid
Not all COAs are genuine. Path to Peptides' 12-point COA verification checklist identifies the following as reliable red flags.
- No named testing laboratory. If the document does not identify a specific, independently verifiable testing facility, it cannot be authenticated. Self-generated COAs are worthless.
- No batch number. A COA without a batch number cannot be tied to a specific production run. It may be a generic template applied across multiple products without testing.
- Round purity numbers. Exactly 99.00 per cent or exactly 98.00 per cent are statistically implausible from a real instrument. Genuine results show decimal precision such as 98.73 per cent.
- Identical results across different batches. Real production batches always differ slightly. Identical purity values and concentration figures across multiple lot numbers suggest the data has been copied rather than measured.
- Test date older than twelve months. A COA more than a year old for a product claiming to be from a recent production run does not match up. Current batches should have current test dates.
- Verification key fails on Janoshik's website. If the key on the COA does not return a valid result at janoshik.com/verify, the COA either does not correspond to a genuine Janoshik test or the product was not tested at all.
- Product name or batch number does not match your label. The COA applies to the specific product and batch identified on it. If your vial has a different batch number to the COA, the document does not verify your product.
What to do if you cannot verify your COA
If the verification key on your Intex Pharma COA does not return a result on Janoshik's website, or if the batch number on your product does not match the COA in the product gallery, do not use the product. Contact us immediately on WhatsApp at +44 7882 742370 or through the official contact page with your batch number. We will look it up manually and give you a definitive answer.
There are two known reasons a genuine Intex Pharma product might not verify immediately. If the product was purchased through an unofficial reseller, the batch code may not be registered in our system. Separately, our verification system underwent a migration during which a specific period of older codes were affected. In either case, the Janoshik verification key on the COA remains the definitive check. If the key returns a valid result on Janoshik's own website, the test was real regardless of what our internal system shows.
If you believe you have received a counterfeit product from another website claiming to be Intex Pharma, report it to us. We actively monitor the UK market for counterfeit operations and will provide information to relevant authorities when evidence is available.
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