ZC Labs
Re-analysis located 0 certificate record(s); 0 mapped to tracked compounds.
Last verified · 39 certificate records · rubric v1.10.0 · zclabs.shop
PepIndex score
79.3 / 100
4.0/ 5Well documentedData coverage
84%
Coverage is the share of scored fields we hold and corroborated for ZC Labs. A score built on a handful of unchecked claims and a score built on forty verified data points are not the same finding, so both numbers are always published together. How coverage is computed.
Strengths
- Publishes 44 lot-specific certificates across its catalogue
- Testing laboratory named on certificates (Freedom Diagnostics Testing)
- Operates under a named legal entity (ZC Labs LLC)
- Publishes a physical postal address
- Prices are visible without an account
Weaknesses
- Certificates are gated rather than openly readable
- No ISO/IEC 17025 accreditation recorded for the testing lab
- No independent third-party reviews located
Regulatory & enforcement record
No adverse regulatory or enforcement action on record. We record authority actions — FDA warning letters, import alerts, seizures, criminal charges — when located. Self-reported reviews are deliberately not scored, because for this market they can be manufactured.
Recorded data pointsEvery field with its source, capture date and whether we corroborated it5 verified8 claimed6 not recordedView all →Hide ↑
A tag of verified means we opened the cited source and confirmed the value; published means we recorded the vendor’s own published information, taken at face value. Both count in full; only a value with no checkable source earns nothing. Fields older than 90 days are marked stale.
Testing
- Testing laboratory
- Freedom Diagnostics TestingVerified28 Aug 2026source
- ISO/IEC 17025 accreditation
- Not recordedNot recorded
- Certificate granularity
- Per batchPublished3 Aug 2026sourceBatch-level certificates described by the vendor; no lot-specific certificate was reachable. Evidence: “…. How do I view a COA before buying? Every product page links to a downloadable Certificate of Analysis showing identity, purity, and batch-specific test result…”
- Certificate accessibility
- Age gatedVerified28 Aug 2026source
- Labeled vs. actual mg published
- Not recordedNot recorded
- Historical certificates retained
- Not recordedNot recorded
Business
- Website
- https://zclabs.shopVerified18 Aug 2026sourceConfirmed reachable by the analysis run. Evidence: “Origin resolved and fetched: https://zclabs.shop”
- Legal entity
- ZC Labs LLCPublished28 Aug 2026source
- Country
- Not recordedNot recorded
- Physical address
- PO Box 284, Myrtle Beach, SC 29578Published28 Aug 2026source
- Contact channels
- Email (support@zclabs.shop)Published18 Aug 2026sourceContact routes published by the vendor. Not tested for a reply, so recorded as published rather than reachable. Evidence: “support@zclabs.shop”
Commercial
- Pricing
- ungatedVerified18 Aug 2026sourcePrices are published openly and can be compared without registering. Evidence: “…w all in one premium dashboard. Share Your Link 0 Total Link Clicks 0 Referrals $0.00 Unpaid Commissions 0% Conversion Rate Your Partner Link Customize & share…”
- Payment methods
- Not recordedNot recorded
- Guarantee / reship policy
- Not recordedNot recorded
Track record
- Independent reviews located
- Not recordedNot recorded
- Mean sentiment (0–5)
- Not recordedNot recorded
- Complaint pattern
- Not recordedNot recorded
Certificate recordsLot-level results with labeled versus assayed mass39 lots9.1% mean deviationView all →Hide ↑
Discrepancy is computed as the absolute difference between labeled and assayed mass, divided by the labeled mass. A vendor-published certificate is a claim; only an independently commissioned assay is treated as corroboration.
| Compound | Lot | Tested | Lab | Labeled | Assayed | Discrepancy | Purity | Source |
|---|---|---|---|---|---|---|---|---|
| Glutathione | ZCLa2608240407 | Freedom Diagnostics Testing | 1500 mg | 1556.58 mg | 3.8% | 99.9% | Vendor-published | |
| Glutathione | ZCLa2608250018 | Freedom Diagnostics Testing | 1500 mg | 1541.96 mg | 2.8% | 100.0% | Vendor-published | |
| Retatrutide | ZCLa2608250019 | Freedom Diagnostics Testing | 10 mg | 10.89 mg | 8.9% | 99.8% | Vendor-published | |
| BPC-157 | ZCLa2608120180 | Freedom Diagnostics Testing | 10 mg | 10.3 mg | 3.0% | 99.4% | Vendor-published | |
| Ipamorelin | ZCLa2608110024 | Freedom Diagnostics Testing | 10 mg | 9.76 mg | 2.4% | 99.8% | Vendor-published | |
| Tesamorelin | ZCLa2608070015 | Freedom Diagnostics Testing | 10 mg | 10 mg | 0.0% | 100.0% | Vendor-published | |
| Tesamorelin | ZCLa2607301113 | Freedom Diagnostics Testing | 10 mg | 11.93 mg | 19.3% | 99.1% | Vendor-published | |
| Retatrutide | ZCLa2607301115 | Freedom Diagnostics Testing | 15 mg | 18.85 mg | 25.7% | 99.7% | Vendor-published | |
| SS-31 | ZCLa2607301116 | Freedom Diagnostics Testing | 50 mg | 55.67 mg | 11.3% | 99.8% | Vendor-published | |
| NAD+ | ZCLa2607301117 | Freedom Diagnostics Testing | 1000 mg | 1046.46 mg | 4.6% | 99.8% | Vendor-published | |
| MOTS-c | ZCLa2607301118 | Freedom Diagnostics Testing | 40 mg | 37.89 mg | 5.3% | 99.6% | Vendor-published | |
| 5-Amino-1MQ | ZCLa2607301119 | Freedom Diagnostics Testing | 50 mg | 55.35 mg | 10.7% | 99.7% | Vendor-published | |
| GHK-Cu | ZCLa2607301120 | Freedom Diagnostics Testing | 100 mg | 103.77 mg | 3.8% | 99.7% | Vendor-published | |
| Tirzepatide | ZCLa2607290144 | Freedom Diagnostics Testing | 10 mg | 11.69 mg | 16.9% | 99.4% | Vendor-published | |
| Tesamorelin | ZCLa2607240722 | Freedom Diagnostics Testing | 10 mg | 11.18 mg | 11.8% | 99.8% | Vendor-published | |
| DSIP | ZCLa2607200287 | Freedom Diagnostics Testing | 10 mg | 9.53 mg | 4.7% | 99.8% | Vendor-published | |
| Ipamorelin | ZCLa2607200288 | Freedom Diagnostics Testing | 10 mg | 8.95 mg | 10.5% | 99.6% | Vendor-published | |
| MOTS-c | ZCLa2607160039 | Freedom Diagnostics Testing | 40 mg | 43.28 mg | 8.2% | 99.5% | Vendor-published | |
| KPV | ZCLa2607160041 | Freedom Diagnostics Testing | 10 mg | 11.01 mg | 10.1% | 99.5% | Vendor-published | |
| Retatrutide | ZCLa2607160042 | Freedom Diagnostics Testing | 15 mg | 18.56 mg | 23.7% | 99.9% | Vendor-published | |
| NAD+ | ZCLa2607100471 | Freedom Diagnostics Testing | 1000 mg | 1023.79 mg | 2.4% | 99.8% | Vendor-published | |
| 5-Amino-1MQ | ZCLa2607100472 | Freedom Diagnostics Testing | 10 mg | 8.18 mg | 18.2% | 99.8% | Vendor-published | |
| NAD+ | ZCLa2606260474 | Freedom Diagnostics Testing | 500 mg | 502.31 mg | 0.5% | 99.7% | Vendor-published | |
| Epithalon | ZCLa2606260475 | Freedom Diagnostics Testing | 50 mg | 48.9 mg | 2.2% | 99.1% | Vendor-published | |
| Melanotan I | ZCLa2606260478 | Freedom Diagnostics Testing | 10 mg | 11.86 mg | 18.6% | 99.9% | Vendor-published | |
| Melanotan II | ZCLa2606260479 | Freedom Diagnostics Testing | 10 mg | 11.13 mg | 11.3% | 99.7% | Vendor-published | |
| Ipamorelin | ZCLa2606260480 | Freedom Diagnostics Testing | 10 mg | 11.21 mg | 12.1% | 99.8% | Vendor-published | |
| Semax | ZCLa2606260481 | Freedom Diagnostics Testing | 10 mg | 11.41 mg | 14.1% | 100.0% | Vendor-published | |
| DSIP | ZCLa2606260482 | Freedom Diagnostics Testing | 10 mg | 11.06 mg | 10.6% | 99.4% | Vendor-published | |
| Selank | ZCLa2606260483 | Freedom Diagnostics Testing | 10 mg | 9.94 mg | 0.6% | 99.8% | Vendor-published | |
| Retatrutide | ZCLa2606080081 | Freedom Diagnostics Testing | 15 mg | 16.28 mg | 8.5% | 99.9% | Vendor-published | |
| Retatrutide | ZCLa2606080082 | Freedom Diagnostics Testing | 30 mg | 31.01 mg | 3.4% | 99.8% | Vendor-published | |
| TB-500 | ZCLa2606080083 | Freedom Diagnostics Testing | 10 mg | 11.01 mg | 10.1% | 99.5% | Vendor-published | |
| BPC-157 | ZCLa2606080084 | Freedom Diagnostics Testing | 10 mg | 11.44 mg | 14.4% | 99.2% | Vendor-published | |
| MOTS-c | ZCLa2606080085 | Freedom Diagnostics Testing | 40 mg | 42.25 mg | 5.6% | 99.6% | Vendor-published | |
| KPV | ZCLa2606080086 | Freedom Diagnostics Testing | 10 mg | 11.51 mg | 15.1% | 99.8% | Vendor-published | |
| Tesamorelin | ZCLa2606080087 | Freedom Diagnostics Testing | 10 mg | 11.22 mg | 12.2% | 99.7% | Vendor-published | |
| Tirzepatide | ZCLa2606080088 | Freedom Diagnostics Testing | 40 mg | 42.81 mg | 7.0% | 99.7% | Vendor-published | |
| GHK-Cu | ZCLa2606080089 | Freedom Diagnostics Testing | 100 mg | 98.66 mg | 1.3% | 99.8% | Vendor-published |
Compounds carried
- 5-Amino-1MQ
- BPC-157
- CJC-1295
- DSIP
- Epithalon
- GHK-Cu
- Glutathione
- Ipamorelin
- KPV
- Melanotan I
- Melanotan II
- MOTS-c
- NAD+
- Retatrutide
- Selank
- Semax
- SS-31
- TB-500
- Tesamorelin
- Tirzepatide
What the research says about what ZC Labs sells
BPC-157
What the research on BPC-157 actually shows
5 not established
CJC-1295
What the research on CJC-1295 actually shows
3 not established
DSIP
What the research on DSIP actually shows
3 not established
Epithalon
What the research on Epithalon actually shows
3 not established
GHK-Cu
What the research on GHK-Cu actually shows
3 not established
Glutathione
What the research on Glutathione actually shows
3 not established
Ipamorelin
What the research on ipamorelin actually shows
4 not established
Melanotan I
What the research on Melanotan I actually shows
3 not established
Melanotan II
What the research on Melanotan II actually shows
3 not established
MOTS-c
What the research on MOTS-c actually shows
3 not established
NAD+
What the research on NAD+ actually shows
3 not established
Retatrutide
What the research on retatrutide actually shows
4 not established
Selank
What the research on Selank actually shows
3 not established
Semax
What the research on Semax actually shows
3 not established
TB-500
What the research on TB-500 actually shows
4 not established
Tesamorelin
What the research on Tesamorelin actually shows
3 not established
Tirzepatide
What the research on Tirzepatide actually shows
3 not established
A vendor’s score measures what it can demonstrate about its testing. It says nothing about whether the compounds it lists have evidence behind them — those are separate questions, and the digests above answer the second one.
How this score was calculatedEvery signal, its weight and the arithmetic — reconstructable by handrubric v1.10.0View calculation →Hide ↑
Each criterion is scored out of 100 over the signals we could assess, then weighted into the overall figure. Within a criterion, a signal contributes weight × merit × credit: merit is how good the recorded value is, credit is what its provenance earns — 1.00 for a value with a checkable source, 0 for a value recorded without one. A missing signal counts as a partial gap — half its weight — so a vendor that publishes what others leave blank scores higher, while a blank still costs; a value recorded without a source counts in full and earns nothing, so omitting one can never raise a score. A criterion with no data at all — track record when no independent reviews are locatable — is set aside and the remaining weights renormalised; the coverage figure, shown alongside, reports how complete the assessment is.
Testing transparency
73.8 / 100 · weight 26% → 19.2
Is the testing lab named? Is it ISO/IEC 17025 accredited? Are certificates of analysis lot-specific, and can anyone read them without an account?
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Testing lab is namedA specific laboratory is identified, so the assay can be traced. | Freedom Diagnostics Testing | Verified28 Aug 2026 · source | 1 | 1.00 | 1.00 | 1.00 / 1 |
| Lab holds ISO/IEC 17025 accreditationNot recorded. | — | Not recorded | 4 | 0.00 | not recorded | 0.00 / 4 |
| Certificate granularityCertificates cover a batch rather than an individual lot. | Per batchBatch-level certificates described by the vendor; no lot-specific certificate was reachable. Evidence: “…. How do I view a COA before buying? Every product page links to a downloadable Certificate of Analysis showing identity, purity, and batch-specific test result…” | Published3 Aug 2026 · source | 3 | 0.60 | 1.00 | 1.80 / 3 |
| Certificates readable without an accountCertificates sit behind a self-attestation click-through. No account is required, but crawlers and casual checking are blocked. | Age gate | Verified28 Aug 2026 · source | 4 | 0.75 | 1.00 | 3.00 / 4 |
| Recognised testing laboratory39 of 39 certificates name a real, identifiable testing laboratory (a known lab, or a clearly independent one). Certificates with no named lab, or where the "lab" is just the vendor's own name, do not count — anyone can print those. | 39 / 39 recognised lab | Published26 Aug 2026 · source | 6 | 1.00 | 1.00 | 6.00 / 6 |
| Testing transparency subtotal · coverage 78% | 11.80 / 18 | |||||
Documentation depth
79.2 / 100 · weight 22% → 17.4
Does the vendor publish labeled-versus-actual milligram figures, retain historical certificates, and how large are the discrepancies we can measure?
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Labeled vs. actual mg publishedNot recorded. | — | Not recorded | 1 | 0.00 | not recorded | 0.00 / 1 |
| Historical certificates retainedNot recorded. | — | Not recorded | 3 | 0.00 | not recorded | 0.00 / 3 |
| Certificates the vendor publishes44 certificates located, 39 of them indexed with readable results; full credit at six. | 44 published, 39 indexed | Published26 Aug 2026 · source | 7 | 1.00 | 1.00 | 7.00 / 7 |
| Labeled vs. actual discrepancyMean absolute deviation between labeled and assayed mass across 39 certificates. Zero scores full marks; 10% or worse scores nothing. | 9.1% mean | Published26 Aug 2026 · source | 1 | 0.09 | 1.00 | 0.09 / 1 |
| Certificate recencyThe most recent certificate is dated 2026-08-26, about 0 months ago. Certificates within a year score full marks; two years or older scores nothing. | newest 2026-08-26 | Published26 Aug 2026 · source | 4 | 1.00 | 1.00 | 4.00 / 4 |
| Documentation depth subtotal · coverage 75% | 11.09 / 16 | |||||
Price & value
80.6 / 100 · weight 20% → 16.1
How the vendor’s per-milligram prices for a standard basket of common compounds compare to the market. Priced below the peer median scores higher; well above it scores lower. An overpriced vendor cannot outrank a comparably documented, better-priced one.
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Price vs market ($/mg)Priced about 16% below the peer median per milligram across a standard basket — better value than the typical vendor. | 84% of medianPrice index 84.4% of peer median across 4 compounds (0 outliers dropped): bpc-157 $3/mg, cjc-1295 $20/mg, ipamorelin $5/mg, melanotan-ii $5/mg. | Verified31 Aug 2026 · source | 10 | 0.81 | 1.00 | 8.06 / 10 |
| Price & value subtotal · coverage 100% | 8.06 / 10 | |||||
Track record
100 / 100 · weight 12% → 12
Adverse regulatory or enforcement action on record — warning letters, import alerts, seizures, criminal charges. Authority-issued and publicly verifiable. Self-reported reviews are deliberately not scored: for this market they can be manufactured.
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Regulatory & enforcement recordNo adverse regulatory or enforcement action on record. Authority actions — warning letters, import alerts, seizures, criminal charges — are recorded here when located; self-reported reviews are deliberately not scored, because for this market they can be manufactured. | None on record | Verified8 Sept 2026 | 10 | 1.00 | 1.00 | 10.00 / 10 |
| Track record subtotal · coverage 100% | 10.00 / 10 | |||||
Business transparency
85.7 / 100 · weight 12% → 10.3
Is a legal entity named, is there a physical address, and can the vendor be reached?
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Named legal entityA registered entity is named, so there is someone to hold responsible. | ZC Labs LLC | Published28 Aug 2026 · source | 3 | 1.00 | 1.00 | 3.00 / 3 |
| Physical address publishedA postal address is published. | PO Box 284, Myrtle Beach, SC 29578 | Published28 Aug 2026 · source | 2 | 1.00 | 1.00 | 2.00 / 2 |
| Contact channelsDistinct contact routes we could identify. Full credit at two. | Email (support@zclabs.shop)Contact routes published by the vendor. Not tested for a reply, so recorded as published rather than reachable. Evidence: “support@zclabs.shop” | Published18 Aug 2026 · source | 2 | 0.50 | 1.00 | 1.00 / 2 |
| Business transparency subtotal · coverage 100% | 6.00 / 7 | |||||
Commercial clarity
53.3 / 100 · weight 8% → 4.3
Is pricing visible without an account, is there a stated guarantee or reship policy, and are payment methods disclosed?
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Pricing visible without an accountPrices are published openly and can be compared. | UngatedPrices are published openly and can be compared without registering. Evidence: “…w all in one premium dashboard. Share Your Link 0 Total Link Clicks 0 Referrals $0.00 Unpaid Commissions 0% Conversion Rate Your Partner Link Customize & share…” | Verified18 Aug 2026 · source | 4 | 1.00 | 1.00 | 4.00 / 4 |
| Guarantee / reship policyNot recorded. | — | Not recorded | 3 | 0.00 | not recorded | 0.00 / 3 |
| Payment methods disclosedNot recorded. | — | Not recorded | 1 | 0.00 | not recorded | 0.00 / 1 |
| Payment offers buyer recourseNot recorded. | — | Not recorded | 3 | 0.00 | not recorded | 0.00 / 3 |
| Commercial clarity subtotal · coverage 36% | 4.00 / 11 | |||||
Total
| Criterion | Subscore | Weight | Contribution | Coverage |
|---|---|---|---|---|
| Testing transparency | 73.8 | 26% | 19.2 | 78% |
| Documentation depth | 79.2 | 22% | 17.4 | 75% |
| Price & value | 80.6 | 20% | 16.1 | 100% |
| Track record | 100 | 12% | 12 | 100% |
| Business transparency | 85.7 | 12% | 10.3 | 100% |
| Commercial clarity | 53.3 | 8% | 4.3 | 36% |
| Computed score | 100% | 79.3 | 84% |
Rubric v1.10.0 · 5 verified, 8 claimed, 0 unsourced, 6 not recorded, 0 stale of 19 scored signals
Community
Reviews
Reader reviews are community context only — they are never part of ZC Labs’s computed PepIndex score, which is built from evidence alone.
No reviews yet. .