Published lab records · Calculated grades. Labelled affiliate placements.
Vendor review · atomiklabz.com

Atomik Labz reviews

Atomik Labz review: our rating is B (88/100), from 44 independently tested vials across 9 peptides; all 44 were the labelled peptide and 35 met our pass mark. Newest test: Aug 12, 2026. Peptide Vendor Reviews publishes each of these 44 results with its certificate.

Grades describe the samples tested; some links earn us a commission, but never change a vendor's grade. How we grade

Compiled from independent lab data · not yet reviewed by our editorsUpdated

Is Atomik Labz legit? Evidence assessment

Evidence assessment

B

Grade B

Our rating · 88/100

In the reviewed independent records, all 44 vials were the right peptide, and 17 of 44 were within 10% of the labelled dose. These results describe the tested samples, not all products or future batches.

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See results by productHow we grade

Test results

What was actually in the vials?

B

Good · 85/100

Mostly good results, with some measurements off target.

  • All 44 vials were the right peptide.
  • 17 of 44 held within 10% of the labelled dose.
  • Purity 97.81–100% (some low).
  • 9 of 44 failed our basic check: purity under 99.5% (9).
More on test results →

Strength of evidence

How much can you rely on these results?

A

Strong · 89/100

The evidence meets our A-band thresholds for sample count, recency and sourcing.

  • 44 vials tested by independent labs. We like to see 10 or more.
  • 36 of 44 were bought by the tester like a normal customer; 8 of 44 were sent in anonymously by buyers. We can't confirm who bought each anonymous vial.
  • 44 of 44 can be traced to a batch.
  • 2 of 44 were checked for contamination.
More on strength of evidence →

Shop reputation

Is the shop itself trustworthy?

N/A

Not reviewed yet

We haven't researched this shop's business record or customer complaints yet.

  • Not part of this grade until we've checked it.
More on shop reputation →

Products

Atomik Labz lab test results by peptide

Each product gets its own grade from the available lab records under the same published rubric. Alternative vendors are shown alongside with their compound-level grades. A grade describes the tested samples only.

  • Retatrutide

    Strong assessment

    last tested Aug 12, 2026

    $5.17/mg · Estimated price · as of Jun 21, 2026

    B
    Vials tested
    9
    Right peptide
    All
    Purity
    99.7–99.986%
    Labelled quantity
    5 of 9 within 10%
    Visit shopSee each vialFurthest off: +26.6% (batch MM917)

    Higher-rated vendor

    A

    Peptide Partners

    32 Retatrutide vials tested · last Oct 14, 2026

    $4.79/mg · 7% cheaper than Atomik Labz

    Estimated price · as of Sep 6, 2026

    Visit shopRead review

  • CJC-1295

    Mixed assessment

    last tested Sep 25, 2025

    $6.60/mg · Estimated price · as of May 14, 2026

    C
    Vials tested
    5
    Right peptide
    All
    Purity
    99.215–99.953%
    Labelled quantity
    0 of 5 within 10%
    Visit shopSee each vialFurthest off: +27.8% (batch FF1011)

    Higher-rated vendor

    B

    Qing Li Peptide

    19 CJC-1295 vials tested · last Aug 12, 2026

    $1.40/mg · 79% cheaper than Atomik Labz

    Estimated price · as of Jul 21, 2026

    Visit shopRead review

  • Ipamorelin

    Mixed assessment

    last tested Sep 25, 2025

    $5.80/mg · Estimated price · as of May 7, 2025

    C
    Vials tested
    5
    Right peptide
    All
    Purity
    97.81–99.771%
    Labelled quantity
    2 of 5 within 10%
    Visit shopSee each vialFurthest off: +30.4% (batch FF1223)

    Higher-rated vendor

    A

    Reta-Peptide

    16 Ipamorelin vials tested · last Jul 20, 2026

    $0.75/mg · 87% cheaper than Atomik Labz

    cheapest: 10 × 10 mg pack

    Visit shopRead review

  • Tirzepatide

    Strong assessment

    last tested Aug 3, 2026

    No current price

    B
    Vials tested
    5
    Right peptide
    All
    Purity
    99.604–99.9%
    Labelled quantity
    3 of 5 within 10%
    Visit shopSee each vialFurthest off: +14.6% (batch MM507)

    Higher-rated vendor

    A

    Guangzhou Jeep Biotechnology JEEP

    16 Tirzepatide vials tested · last Aug 4, 2026

    $0.42/mg

    Estimated price · as of Aug 22, 2026

    Visit shopRead review

  • BPC-157

    Mixed assessment

    last tested May 6, 2025

    $6.00/mg · Estimated price · as of May 6, 2025

    C
    Vials tested
    4
    Right peptide
    All
    Purity
    98.476–99.632%
    Labelled quantity
    0 of 4 within 10%
    Visit shopSee each vialFurthest off: +27.4% (batch HH120324)

    Higher-rated vendor

    B

    HK Peptides

    22 BPC-157 vials tested · last Sep 9, 2026

    $0.82/mg · 86% cheaper than Atomik Labz

    Estimated price · as of Aug 14, 2026

    Visit shopRead review

  • GHK-Cu

    Mixed assessment

    last tested May 20, 2025

    $0.55/mg · Estimated price · as of May 20, 2025

    C
    Vials tested
    4
    Right peptide
    All
    Purity
    99.751–99.981%
    Labelled quantity
    2 of 4 within 10%
    Visit shopSee each vialFurthest off: +15.3% (batch 2025-02-08)

    Higher-rated vendor

    A

    Reta-Peptide

    28 GHK-Cu vials tested · last Sep 15, 2026

    $0.06/mg · 89% cheaper than Atomik Labz

    Estimated price · as of Jul 1, 2026

    Visit shopRead review

  • Melanotan II

    Mixed assessment

    last tested May 21, 2025

    $2.90/mg · Estimated price · as of May 21, 2025

    C
    Vials tested
    4
    Right peptide
    All
    Purity
    99.846–100%
    Labelled quantity
    2 of 4 within 10%
    Visit shopSee each vialFurthest off: +21.2% (batch MM1101)

    Higher-rated vendor

    B

    HK Peptides

    12 Melanotan II vials tested · last Jul 9, 2026

    $0.41/mg · 86% cheaper than Atomik Labz

    Estimated price · as of Feb 1, 2026

    Visit shopRead review

  • PT-141

    Mixed assessment

    last tested May 21, 2025

    $3.70/mg · Estimated price · as of May 21, 2025

    C
    Vials tested
    4
    Right peptide
    All
    Purity
    98.323–99.725%
    Labelled quantity
    2 of 4 within 10%
    Visit shopSee each vialFurthest off: +20.7% (batch MM1223)

    Higher-rated vendor

    B

    Qing Li Peptide

    7 PT-141 vials tested · last Sep 4, 2026

    Visit shopRead review

  • Semaglutide

    Mixed assessment

    last tested May 6, 2025

    $13.00/mg · Estimated price · as of May 6, 2025

    C
    Vials tested
    4
    Right peptide
    All
    Purity
    99.649–99.986%
    Labelled quantity
    1 of 4 within 10%
    Visit shopSee each vialFurthest off: +29.2% (batch FF0823)

    Higher-rated vendor

    B

    Royal Peptides

    8 Semaglutide vials tested · last Jul 23, 2026

    $2.00/mg · 85% cheaper than Atomik Labz

    cheapest: 10 × 30 mg pack

    Visit shopRead review

  • Tesamorelin

    Never tested

    $5.50/mg · Estimated price · as of Feb 3, 2026

    N/A

    No lab has tested this shop's Tesamorelin, so we can't say what's in the vial.

    Visit shop

    Graded vendor

    B

    Shanghai ERP peptide Biotechnology

    13 Tesamorelin vials tested · last Oct 12, 2026

    $1.45/mg · 74% cheaper than Atomik Labz

    cheapest: 10 × 20 mg pack

    Visit shopRead review

Vendors shown must meet our published grading criteria for that peptide and follow the shared quality ranking. Partner status never changes the order. We earn a commission on purchases through partner links. Shops can't pay for a grade, and inclusion is not an endorsement.

Quick facts

Atomik Labz reviews: key findings

From 44 vials tested by independent labs. These results describe the tested vials, not every vial the shop sells. Tap i for test definitions and thresholds.

What was in the vials

Right peptide?

44 of 44 vials

Every vial was the peptide on the label

Amount matches label?

17 of 44 vials

Within 10% of the labelled amount

Peptide purity

97.81–100%

Purity across 44 tested vials

Failed our quality check

9 of 44 vials

Purity below 99.5%

Testing coverage and limitations

Vials tested for contaminants

2 of 44 vials

Checked for heavy metals and bacterial toxins

Vials with a batch number

44 of 44 vials

Tested vials linked to a production run

Bought anonymously?

36 of 44 vials

Confirmed anonymous purchases

Most recent lab test

Aug 2026

3 months ago

Test results

What the lab found

44 vials tested by 5 labs, May 5, 2025 to Aug 12, 2026. Mostly good results, with some measurements off target.

How close each vial was to the dose on its label

0% means exactly the amount on the label. Green band: within 10%, which is good. Dashed lines: 35% over or under, where a vial fails our basic check.

What looks good

What to watch

Atomik Labz website

Recorded sample grade: B. Reta-Peptide has sample grade A.

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Strength of evidence

What supports these results?

A lab result only describes the vial that was tested. This grade shows how well the tested vials represent what you would actually receive.
A

Strong evidence

Just 2 checked for contamination. The evidence meets our A-band thresholds for sample count, recency and sourcing.

  • How many vials were tested44 vials. We like to see 10 or more.Good
  • Who bought them36 of 44 bought by the tester like a normal customer; 8 of 44 sent in anonymously by buyers.Good
  • Batch numbers44 of 44 vials.Good
  • How recentLatest test 91 days before our check.Good
  • Lab reports44 of 44 link to the lab report; none confirmed with the lab yet.Good
  • Checked for contamination2 of 44 vials.Poor
  • Different labs5 labs.Good
What this review can't tell you (1)
  • Lab results describe the vials that were tested, not future batches or other products, and say nothing about whether a peptide is safe or suitable for you.

Shop reputation

Atomik Labz store status, shipping and payment

Kept apart from the lab results: a smooth delivery says nothing about what's in a vial, and a clean lab report says nothing about refunds.

Not reviewed yet

We haven't checked this shop's storefront, registration, news or complaint records yet, so this part isn't graded and doesn't count toward the verdict. Know something we should look at? Tell us.

All tests

Every Atomik Labz vial tested

A vial passes if it's the right peptide, at least 99.5% pure and within 35% of the labelled dose. Tap a vial for its batch, sender and lab report.

Comparison

Atomik Labz vs other peptide vendors

Same peptide, same 12 months, same rules for every shop. Check the number of vials before comparing rates.

Retatrutide

Aug 12, 2025 – Aug 12, 2026 · 354 shops tested

  • Atomik Labz

    5 vials · typical error 7%

    Passed
    100%5/5
    Quantity within 10%
    60%3/5
    Visit shop

  • LiliPeptide

    146 vials · typical error 5.3%

    Passed
    79%114/145
    Quantity within 10%
    82%114/139

  • HK Peptides

    119 vials · typical error 5%

    Passed
    87%104/119
    Quantity within 10%
    78%92/118
    Visit shop

  • Qing Li Peptide

    96 vials · typical error 6%

    Passed
    82%78/95
    Quantity within 10%
    73%69/95
    Visit shop

  • ZLZ Peptide

    92 vials · typical error 6.3%

    Passed
    90%82/91
    Quantity within 10%
    70%63/90
    Visit shop

Market average across all 354 shops: 80% passed, 73% within 10% of the label.

The 4 open shops with the most Retatrutide records in the same window, chosen by record count only.

Methodology

How we grade

Three separate scores out of 100, combined into one letter grade. Great reviews can never make up for bad lab results.

Lab results45%

How pure each vial was and how close it came to the labelled dose. Recent tests count more; a wrong peptide scores zero.

Strength of evidence25%

How many vials were tested, whether they were bought anonymously, and whether the reports can be checked.

Shop reputation30%

Starts at 100 and loses points for each problem we can source. Customer reviews never change a lab result.

Grade scale

  • A90+
  • B80+
  • C70+
  • D60+
  • F<60

Evidence uses lower cut-offs, because anonymous purchases are rare across the market.

Limits on the overall grade

  • Never higher than the lab-results grade.
  • D at most if the shop can't be ordered from, has a critical problem or fails its lab tests.
  • C at most if the evidence is very weak.
  • No lab results means no grade.
Full scoring rulesPoints, caps and cut-offs behind each score

Lab results

  • Each vial scores out of 100: half for purity, half for how close it was to the labelled dose.
  • A wrong peptide scores zero, and costs the shop 1.5 more points for every 1% of vials affected.
  • A vial that tests positive for bacterial toxins can score no more than 30.
  • Recent vials count more than old ones. Reports the shop published itself count 50%.
  • With only a few vials, we hold back: one perfect vial can't earn an A.

Strength of evidence

  • How many vials were tested (up to 35 points).
  • Whether they were bought anonymously, like a customer would (up to 20).
  • Batch numbers, how recent the tests are, a lab report you can check, contamination tests and more than one lab (the remaining 45).
  • Cut-offs: A 80+ · B 70+ · C 60+ · D 50+ · F 0+.

Shop reputation

  • Starts at 100. Each problem we can source costs points: critical 35, major 20, minor 7.
  • "Not reviewed yet" until we've checked, and then it doesn't count toward the overall grade.
  • Customer reviews inform this score only; they never change a lab result.

What the lab grade means. A: Vials were the right peptide, very pure and close to the labelled dose. C: Results were mixed: some measurements missed the mark. F: Results often failed: wrong peptide, low purity or far-off doses.

Where the data comes from, and what we didn't doSources, the basic check, missing data, authorship

Lab data. Results come from independent lab records, each published with its lab report. We copy the measurements, link the report, and grade them ourselves; nobody else's rating is used. The data is refreshed at most hourly.

The basic check. A vial passes if it's the right peptide, at least 99.5% pure, and within 35% of the labelled dose. A vial missing purity or dose is marked "not enough data", never a pass.

Missing data and look-alikes. Missing values are shown as "not measured" or "not checked". Shops with similar names aren't combined unless a connection is documented.

What we didn't do. Unless a vial says otherwise, we didn't buy or test it ourselves, didn't confirm reports with the labs, and didn't contact the shop.

Authorship. This page is compiled automatically from lab data and hasn't been reviewed by an editor yet. We have no affiliate relationship with Atomik Labz and earn nothing from it.

Have evidence we should see? Lab reports with a batch number, order records or corrections can be sent through our contact page or to editorial@peptidevendorreviews.org.

The same rubric applies to every shop, and commercial relationships never change ratings, grades, rankings, or the selection of alternatives. Partner links are labelled. A grade describes the evidence on the date shown. It isn't advice to buy or avoid a shop, or a judgement on whether any peptide is safe or right for you. Rubric grading-v2 (2026-10-24).

Elsewhere

Where Atomik Labz is discussed

Customer reviews and forum threads are kept off this page. These links open the conversations people search for.

FAQ

Atomik Labz reviews: common questions

Is Atomik Labz legit?

The reviewed evidence receives grade B under our published rubric. Independent labs have tested 44 of its vials across 9 peptides; 44 were the right peptide and 35 passed our basic check. Failed: CJC-1295 5 mg (batch FF1011) (failed: purity was 99.483%, below 99.5%); CJC-1295 5 mg (batch FF1011) (failed: purity was 99.215%, below 99.5%); Ipamorelin 5 mg (batch FF1223) (failed: purity was 99%, below 99.5%); Ipamorelin 5 mg (batch FF1223) (failed: purity was 97.81%, below 99.5%); PT-141 10 mg (batch MM1223) (failed: purity was 98.323%, below 99.5%); PT-141 10 mg (batch MM1223) (failed: purity was 98.916%, below 99.5%); BPC-157 5 mg (batch HH120324) (failed: purity was 98.476%, below 99.5%); BPC-157 5 mg (batch HH120324) (failed: purity was 98.517%, below 99.5%); BPC-157 5 mg (batch HH120324) (failed: purity was 99.462%, below 99.5%). We grade lab evidence and published facts; grades are not endorsements and do not determine whether a business acts lawfully.

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What do Atomik Labz's lab results show?

44 vials tested between May 5, 2025 and Aug 12, 2026: Retatrutide (9), CJC-1295 (5), Ipamorelin (5), Tirzepatide (5), BPC-157 (4), GHK-Cu (4), Melanotan II (4), PT-141 (4) and Semaglutide (4). 44 of 44 were the right peptide, purity was measured on 44, and 7 of 44 were within 5% of the labelled dose. 9 failed our basic check (right peptide, at least 99.5% pure, within 35% of the labelled dose).

Who sent Atomik Labz's vials for testing?

bought by the independent tester (36) and sent in anonymously (8). Chromate (12), TrustPointe (12), Krause Analytical (10), Janoshik (8) and BTLabs (2) ran the tests. 36 were bought by the tester like a normal customer.

Does Atomik Labz have a discount code?

We haven't verified a discount code for Atomik Labz. We only list codes we have seen on the shop's site or confirmed at checkout.

Atomik Labz website

Recorded sample grade: B. Reta-Peptide has sample grade A.

Visit shopVisit shop

Sources

Sources, updates and corrections

  1. Independent lab test records, one linked per vial in the test list · Test data: Finnrick Analytics · read Nov 11, 2026

For this shop

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