Nexaph Review: Pricing, COAs, Testing, and What We Found
An independent Nexaph review covering a kit-only research catalog, a Janoshik-linked lab portal, house codes NXP-1P/2P/3P, Shanghai company identity, and US shipping terms.
Nexaph is now a curated vendor on PeptideBenchmark. That decision rests on evidence a reader can open and check — prices, kit sizes, and laboratory reports — not on a testimonial or a vague “third-party tested” claim.
Two things stood out. First, almost every research listing is a fixed 10-vial kit, so the honest comparison is kit total milligrams against kit price, not a fictional single-vial SKU. Second, the vendor’s COA page is not a PDF dump on the storefront; it opens a searchable lab portal that points each active batch at a Janoshik Analytical report, and many of those batches also have a Nexaph testing mirror that names the compound in its own results.
Reviewed August 7, 2026. PeptideBenchmark has no affiliate, coupon, sponsorship, or paid-placement relationship with Nexaph. The vendor sells research-use-only products; this is a commercial-transparency and documentary-evidence review, not human-use guidance or medical advice.
The short version
We found a public lab portal with 304 certificate routes tied to Janoshik Analytical — every published batch still retained on the portal, not only the currently active one:
- 43 currently active batches and 261 previous versions across 45 product-strength indexes (a few indexes share the same active certificate, so unique active routes are slightly under the index count);
- some resolve through testing.nexaph.com mirror pages that print Mass/Purity (with a named compound), Sterility, Endotoxin, and Heavy Metals for the same batch;
- the rest link straight to a Janoshik report URL;
- PeptideBenchmark independently confirmed the distinct Janoshik task/key routes at the laboratory (August 8, 2026 refresh).
Average reported purity across the mirror panels we could read is about 99.6%. Panel coverage is unusually broad for a kit-only storefront: identity/HPLC, endotoxin, sterility, and heavy metals all appear on a meaningful share of active batches.
The catalog is readable without an account, the COA portal is structured by product strength, and the testing mirrors name compounds instead of hiding behind house codes alone. Against that: every comparable offer is a 10-vial kit, and the About page names Shanghai Nexa Pharma Co while the checkout experience is US-shipping-forward.
What we found in the catalog
Nexaph’s storefront publishes its full priced research catalog publicly. Almost every peptide listing is sold as a 10-vial kit, with strength either in the title or on a milligram variation. PeptideBenchmark therefore treats totalMg as kit total (per-vial milligrams × 10) and compares on that basis so $/mg is not inflated by pretending the kit is a single vial.
| Catalog result | Count | PB treatment |
|---|---|---|
| Public parent products | 53 | Retained in the coverage audit |
| Comparable kit rows after variation expansion | 55 | Published to Pricing and Stack Builder |
| Deferred branded or non-board compounds | 2 | NXP-ATP (no public compound disclosure); 5-Amino-1MQ (outside peptide-first board) |
| Out of scope | 3 | Topical/cosmetic ampules; Lipo-C with B12 |
| Unavailable pre-order SKUs | 4 | Strengths already covered by in-stock variants |
House codes matter here. NXP-2P and NXP-3P pre-order copy name Tirz and Reta, and the testing mirrors for those families disclose tirzepatide and retatrutide by name. NXP-1P mirrors disclose semaglutide the same way. We map those labels to the named compounds and mark them vendor-aligned. NXP-ATP stays off the pricing board until the vendor publicly names what is in the vial — a Janoshik filename hint is not enough.
Current offers can be compared on PeptideBenchmark Pricing, and mixed-product requirements can be modeled in the Stack Builder.
The certificates
Browse preserved records in the Nexaph COA results.
The storefront COA link opens a dedicated portal that lists one index per catalog strength. Selecting an index returns the currently active batch plus prior versions. Active batches resolve in two ways:
Testing mirrors (testing.nexaph.com)
These pages are the strongest public identity evidence in the set. They embed structured Mass/Purity, Sterility, Endotoxin, and Heavy Metals results and print the compound name in the Mass/Purity line — for example naming semaglutide, tirzepatide, or retatrutide rather than only an NXP code. That is what allows PeptideBenchmark to treat the house codes as disclosed aliases instead of guesses.
Direct Janoshik links
Other active batches point at verify.janoshik.com / janoshik.com report URLs with task and key embedded in the path. Those are the right shape for independent verification. As of the August 8, 2026 refresh, PeptideBenchmark confirms those distinct Janoshik routes at the laboratory and records them as provider-verified; re-checks continue on the normal trust cadence.
A COA is not a sterility guarantee for the vial that arrives, and it is not a blanket endorsement of every strength a vendor sells. It is a dated laboratory document about a stated batch.
Identity, shipping, and terms
The About page names the operating company as Shanghai Nexa Pharma Co and describes a global research-chemical supplier. The same storefront advertises free USA shipping over $200, same-day dispatch before 2 PM Eastern, and USPS / FedEx options. Contact is listed as cain@nexaph.com. Peptide Critic and similar directories often still show a United States location. PeptideBenchmark keeps the Shanghai company identity in the watch-outs because it is what the vendor’s own About page says; US shipping copy does not erase that.
Trustpilot
Nexaph’s Trustpilot profile for nexaph.com showed roughly 3.8 / 5 across 68 reviews when we synced it for this onboarding (observed August 7, 2026). That is a reputation signal, not a laboratory signal, and it is tracked separately from COA verification.
What this review does not claim
- It does not claim Nexaph products are safe, effective, or appropriate for any use.
- It does not treat a kit price as a single-vial price.
- It does not treat a provider-verified Janoshik report as proof that a later shipped kit matches that batch.
- It does not resolve the tension between a Shanghai company identity and US-forward shipping presentation — it only records both.
Live profile and related tools
- Nexaph vendor profile
- Nexaph COA database filter
- Pricing board
- Stack Builder
- How PeptideBenchmark scores vendors
- Official Nexaph storefront
Historical counts and commercial terms in this article are dated to the August 7, 2026 review. Live coverage, COA counts, and Trustpilot figures belong on the vendor profile and will move as the public record changes.
Correction — August 7, 2026 (same day)
The first onboarding pass only ingested each index’s currently active certificate (45 routes). A same-day follow-up extended discovery to the portal’s full retained history (304 unique routes; 298 now in the public COA archive). Active-only scraping is treated as incomplete for any vendor that publishes previous batches.
Common questions
Is Nexaph legitimate?
PeptideBenchmark does not issue binary legitimacy or product-safety endorsements. We confirmed an openly priced kit catalog, a public lab portal that points each active batch at a Janoshik Analytical report, and vendor mirror pages that name the tested compound in their own results. Those facts create an inspectable record; they do not establish the condition or safety of a physical vial.
Does Nexaph publish COAs?
Yes. The storefront's COA link opens a dedicated lab portal that lists one active batch per catalog strength. Active batches resolve either to a Janoshik report or to a Nexaph testing mirror that embeds Mass/Purity, Sterility, Endotoxin, and Heavy Metals panels for that batch.
What do NXP-1P, NXP-2P, and NXP-3P mean?
They are Nexaph house codes. Pre-order listings name Tirz for NXP-2P and Reta for NXP-3P, and the testing mirrors for those families disclose tirzepatide and retatrutide by name in their Mass/Purity results. NXP-1P mirrors disclose semaglutide the same way. PeptideBenchmark maps those labels to the named compounds and flags them as alias-mapped.
Where is Nexaph based?
The public About page names the operating company as Shanghai Nexa Pharma Co. The storefront simultaneously advertises free USA shipping over $200 and same-day dispatch before 2 PM ET, and third-party directories often list a United States location. Those signals do not cancel each other; readers should treat the Shanghai company identity as part of the public record.
Does PeptideBenchmark have an affiliate relationship with Nexaph?
No. At the time of this review, PeptideBenchmark had no affiliate, coupon, sponsorship, or paid-placement relationship with Nexaph.