Arizen BioLabs advertises the larger percentage while its fall sale runs: FALL30 is 30% off eligible items, versus PS Peptides’ NOW10OFF at 10%. We rechecked both codes on November 2, 2026. That does not mean Arizen is automatically cheaper: compare the same compound, strength, shipping and final cart. Arizen’s sale code excludes its 10-vial bulk kits, while PS Peptides’ code stacked with its multi-vial price in our earlier BPC-157 test.
| Question | PS Peptides | Arizen BioLabs |
|---|---|---|
| Code | NOW10OFF, 10% off |
FALL30, 30% during sale; QUICK, 10% backup |
| Quantity behavior | 3% and 5% bundle prices stacked in our test | Code cannot be used on 10-vial bulk kits |
| Published testing | Multiple batch panels on products we inspected | Janoshik and Freedom Diagnostics certificates on tested lots |
| Shipping region | US, Canada, EU, UK and Australia listed | US only |
Which code should you try first?
For an eligible Arizen item during its fall sale, try FALL30 and confirm the discount line. Arizen allows only one code per order; entering FALL30 replaces QUICK if that backup was already applied. For a 10-vial bulk kit, Arizen says neither code applies, so compare the kit’s listed price directly with a PS Peptides cart. PS Peptides’ NOW10OFF worked on a single vial and on the multi-vial BPC-157 cart we tested in September 2026.
Which lab evidence is broader?
PS Peptides linked purity and separate safety-panel results on the product pages we inspected. Arizen publishes third-party COAs for tested lots; its Freedom Diagnostics reports include identity and endotoxin on some batches. Coverage varies by product. Neither store’s headline purity claim substitutes for checking the lot-specific certificate.
Read the PS Peptides review and code test and the Arizen BioLabs sale-code guide before ordering. We earn a commission if you order through our links or codes. Products are for laboratory research only, not human or animal use.
Frequently Asked Questions
Does FALL30 work on Arizen’s bulk kits?
No. Arizen says its 10-vial kits are excluded from its codes. Compare the kit price with the current PS Peptides cart instead.
Is FALL30 a permanent 30% code?
It is described as a fall-sale code, not a permanent offer. Arizen lists QUICK for 10% as a backup. Check the discount at checkout.