- info@sdpharmlabs.com
- +1 (619) 356-0898
- ISO/IEC 17025:2017 & DEA Licensed
PharmLabs is an ISO/IEC 17025:2017 accredited analytical laboratory specializing in high-quality peptide testing. We provide accurate potency and purity analysis
for more than 14 peptide compounds, along with comprehensive contamination screening to help verify product quality, consistency, and safety. Our testing services include endotoxins, sterility (TAMC/TYMC), heavy metals, and residual solvents, giving clients a complete picture of their product before it reaches researchers or consumers.
Whether you are a peptide manufacturer, distributor, compounding pharmacy, research organization, or brand owner, PharmLabs delivers precise analytical results with fast turnaround times, competitive pricing, and exceptional customer support. Every sample is analyzed using validated methods by experienced scientists, providing reliable data you can trust for quality assurance, product verification, and regulatory
confidence.
Or call 619-356-0898
When evaluating a peptide, potency and purity are two critical measurements—but they are not the same, and neither tells the complete story.
Potency measures the amount of the target peptide present in the sample compared to its labeled claim. In other words, it answers the question: “Did I receive the amount of peptide I paid for?”
Purity , on the other hand, measures how much of the detectable material consists of the desired peptide versus related peptide impurities, degradation products, or synthesis byproducts. A high purity percentage indicates that the peptide itself is chemically clean, but it does not measure every potential contaminant that may be present.
Chromatographic purity analysis only evaluates compounds that the analytical method is designed to detect. It does not account for contaminants such as endotoxins, residual solvents, heavy metals, microbial contamination, or residual moisture and salts . As a result, a peptide can report 99% purity while still containing contaminants that fall outside the scope of the purity assay.
For this reason, potency and purity testing should be viewed as complementary—not comprehensive. They confirm the identity, concentration, and chemical quality of the peptide, but they do not assess product safety.
For peptides intended for research or other applications involving reconstitution, comprehensive contamination screening becomes especially important. Testing for endotoxins, sterility, heavy metals, and residual solvents helps identify contaminants that chromatography alone cannot detect and provides a more complete assessment of product quality. This is why PharmLabs offers a comprehensive peptide testing panel that combines potency, purity, and contamination analysis , giving clients confidence not only in what their product contains, but also in what it does not contain.
PharmLabs offers HPLC potency analysis for more than 14 peptide compounds, combined with a comprehensive contamination panel including endotoxins, sterility, heavy metals, and residual solvents. Choose potency testing alone or combine it with our full panel for a complete assessment of your product’s quality, purity, and safety.
Percentage of the target peptide compared to peptide-related impurities
Measures the amount of the target peptide present in the sample
Contamination from reagents, catalysts, equipment, water, and packaging
Solvent carryover from synthesis and purification
Handling and storage contamination
Bacterial endotoxin — a specific concern for injected material
(TAMC & TYMC)
Potency, purity, and full contamination screening
PharmLabs currently offers potency and purity testing for more than 14 peptide compounds using validated HPLC methods. For each peptide, we publish our Limit of Detection (LOD) and Limit of Quantitation (LOQ), providing transparency into the sensitivity and performance of our analytical methods. These values help define the confidence and reporting capabilities behind every result.
| Compound | Abbr. | Instrument | LOD | LOQ |
|---|---|---|---|---|
| AOD-9604 (Acetate) | AOD | HPLC | 0.796 PPM | 2.411 PPM |
| BPC-157 (Acetate) | BPC | HPLC | 1.995 PPM | 6.046 PPM |
| CJC-1295 (Acetate) | CJC | HPLC | 1.65 PPM | 5 PPM |
| GHRP-G (Acetate) | GHR6 | HPLC | 0.048 PPM | 0.146 PPM |
| Hexarelin | HEX | HPLC | 0.037 PPM | 0.112 PPM |
| Ipamorelin (Acetate) | IPM | HPLC | 0.245 PPM | 0.741 PPM |
| Melanotan II (Acetate) | MT2 | HPLC | 0.142 PPM | 0.43 PPM |
| PT-141 (Acetate) | PTA | HPLC | 1.113 PPM | 3.372 PPM |
| Retatrutide | RET | HPLC | 0.751 PPM | 2.275 PPM |
| Semaglutide | SEM | HPLC | 6.191 PPM | 18.761 PPM |
| SLU-PP-332 | SLU | HPLC | 0.204 PPM | 0.619 PPM |
| TB-500 | TB5 | HPLC | 1.729 PPM | 5.239 PPM |
| Thymosin Alpha 1 | Tα1 | HPLC | 11.117 PPM | 33.686 PPM |
| Tirzepatide | TRZ | HPLC | 0.521 PPM | 1.579 PPM |
Need a compound not listed? Contact us — we may be able to accommodate it.
Submit the form below or call 619-356-0898. Tell us the compound, how many samples, and what testing you need. We’ll confirm pricing, turnaround, and how much material to send.
Chain of custody forms, sample size requirements, and pricing guides are available in your client portal. Enter your company details exactly as they appear on your PharmLabs account, and name each sample exactly as you want it to read on the certificate of analysis. Mark rush if you need expedited handling.
Keep vials sealed in their original containers — lyophilized powder is hygroscopic, and a compromised seal in transit changes moisture content. Label each unit with the compound name and your lot or batch identifier, matching your paperwork exactly. Send the signed chain of custody form with the shipment. Payment is required before testing begins.
Track testing status and download your certificate of analysis, invoices, and result summaries from your client portal. Results can be exported in bulk to spreadsheet format.
PharmLabs
6696 Mesa Ridge Rd, Ste A
San Diego, CA 92121
Quality matters. PharmLabs is an ISO/IEC 17025:2017 accredited analytical laboratory, with accredited methods performed under a defined scope. Upon request, we are happy to provide our scope of accreditation, which can also be independently verified through our accrediting body.
Our validated HPLC methods provide accurate, reproducible potency and purity testing for more than 14 peptide compounds. We publish our Limits of Detection (LOD) and Limits of Quantitation (LOQ), giving clients confidence in the sensitivity, performance, and reliability of every reported result.
Potency and purity are only part of the quality picture. PharmLabs also offers contamination screening for endotoxins, sterility, heavy metals, and residual solvents, helping manufacturers verify both the quality and safety of their peptide products through a single trusted laboratory.
We understand that speed matters. Our experienced analytical team provides fast turnaround times, responsive customer support, and clear communication throughout the testing process to help keep your projects moving.
Results are delivered through our secure client portal with complete chain of custody documentation and professionally formatted Certificates of Analysis (COAs). Every report is issued by an accredited laboratory, giving manufacturers, distributors, and customers confidence in the integrity and traceability of their analytical results.
Receive premium analytical testing without premium pricing. If you find a lower published price from another ISO/IEC 17025 accredited laboratory for comparable testing, we’ll match it.
Current pricing guides, discount schedules, sample size requirements, and chain of custody forms are available to account holders. Create an account to access them, or request a quote and we’ll walk you through it.
PharmLabs provides testing for a growing list of 14+ peptides, with new compounds continually being added as the peptide industry evolves.
Some of the peptides we commonly test include Retatrutide, Tirzepatide, Semaglutide, BPC-157, TB-500, and PT-141, along with many others.
Testing options include potency and purity, endotoxin screening, sterility, heavy metals, and residual solvents, allowing clients to evaluate more than just a peptide’s purity percentage.
Don’t see your peptide listed? Contact our team. We are continually expanding our testing capabilities and can confirm whether we currently test your specific peptide or discuss adding it to our testing program.
PharmLabs offers competitive, transparent pricing for peptide testing, with individual tests starting at $157.50:
Peptide Potency Testing: $275
Endotoxin Screening: $160
Sterility Testing: $220
Heavy Metals Testing: $157.50
Residual Solvents Testing: $157.50
Complete Peptide Testing Bundle: $790 — includes all five essential tests and saves $80 compared with individual testing.
And with our Price Match Guarantee, you can test with confidence knowing you’re getting a competitive price. If you find a lower price for comparable testing from another ISO/IEC 17025 accredited laboratory, PharmLabs will meet or beat it.
Our goal is simple: provide first-class analytical testing, fast turnaround times, and reliable results at the most competitive price possible.
Turnaround time depends on the testing services requested, but PharmLabs is committed to providing fast, reliable results without compromising quality.
Potency & Purity: 3–5 business days
Endotoxin Screening: 3–5 business days
Sterility Testing: 3–5 business days
Heavy Metals: 5–7 business days
Residual Solvents: 5–7 business days
Complete Peptide Testing Full Panel: 5–7 business days
Turnaround times begin once your sample has been received and accepted by our laboratory. Rush testing may be available for select analyses—contact our team before submitting if you need results by a specific date.
The amount of sample required depends on the type of testing requested:
Potency & Purity: 50 mg (0.050 g) for isolate/powder; at least 500 mg (0.5 g) for strips, tablets, or capsules; 0.5 mL for liquids
Endotoxin Screening: 100 mg
Sterility Testing: 1.0 g
Residual Solvents: 250 mg (0.250 g)
Heavy Metals: 500 mg (0.5 g)
Complete Peptide Testing Bundle: 7 g for isolate/powder; at least 7 g for strips, tablets, or capsules; or 7 mL for liquids
When submitting strips, tablets, or capsules, please send the entire product/package whenever possible to help ensure a representative sample.
The Sample Size Requirements Document attached
If you’re unsure how much sample to submit for your specific product or testing needs, contact PharmLabs before shipping and our team will be happy to help.
Yes. PharmLabs is an ISO/IEC 17025:2017 accredited analytical laboratory, demonstrating our commitment to technical competence, validated methods, quality systems, and reliable analytical results.
Our accreditation includes peptide testing within our accredited scope, giving clients added confidence that their testing is performed under internationally recognized laboratory quality standards.
PharmLabs is also DEA registered and USDA licensed, further supporting our commitment to quality, compliance, and trusted analytical testing.
First Class. Accurate Results. Total Confidence.
Yes. Purity is only one part of understanding the quality of a peptide product. PharmLabs offers a comprehensive range of peptide testing services to evaluate both the amount of peptide present and potential contaminants.
Our peptide testing services include:
Potency & Purity – Confirms peptide identity, purity, and the amount of peptide present
Endotoxin Screening – Detects bacterial endotoxins that may pose a safety concern
Sterility Testing – Screens for microbial contamination, including bacteria, yeast, and mold
Heavy Metals – Tests for lead, mercury, cadmium, and arsenic
Residual Solvents – Screens for solvents that may remain from the manufacturing process
For clients looking for a more complete assessment, our Complete Peptide Testing Bundle combines all five essential tests for $790.
Testing beyond purity provides a much more complete picture of a peptide product’s quality, potency, and potential contamination.
Yes. Rush testing is available for Peptide Purity & Potency testing when you need results faster than our standard turnaround time.
Rush options may include Same Day, 1-Business-Day, and 2-Business-Day turnaround, depending on laboratory capacity and when your sample is received.
Rush service is currently available only for Peptide Purity & Potency testing. Endotoxin, sterility, heavy metals, and residual solvents are performed according to their standard turnaround times.
If you have a specific deadline, we recommend contacting PharmLabs before submitting your sample so our team can confirm rush availability and the fastest turnaround option.
Peptide samples should be shipped directly to our San Diego laboratory:
PharmLabs
6696 Mesa Ridge Rd, Ste A
San Diego, CA 92121
Please include a completed Chain of Custody (COC) form with your shipment so our laboratory knows exactly which tests you are requesting.
Once your samples arrive, our team will check them in and begin processing your testing order. If you have questions about packaging, sample quantity, or shipping, contact our Client Care team and we’ll be happy to help.
Tell us what you need tested and we’ll come back with pricing, turnaround, and sample requirements. Prefer to talk it through? Schedule a call or dial 619-356-0898.
Book time with a peptide testing rep to review your panel, sample requirements, and turnaround.
ISO/IEC 17025:2017 accredited. DEA licensed. San Diego.
