PCT15 takes 15% off the cart subtotal at BioLongevity Labs, a research chemical supplier listing more than 150 research-grade peptides and bioregulators for in vitro scientific use. Fifteen per cent is easy to underestimate as an abstraction, so it is worth converting into money. The two figures the vendor cites are $30 off a $200 basket and $120 off an $800 basket. Scaled up, the percentage rewards consolidation: a lab placing four separate $200 orders saves $30 each time, while the same $800 spent in one order saves $120 — the same proportion, but only one shipping event to pay for.
The discount is also taken off at the point of sale, not returned afterwards. The knowledge is explicit that it is applied to the cart subtotal at checkout rather than paid back later as credit, so there is no float period and nothing to reconcile against a future order.
This is the main catch. BioLongevity Labs offers free shipping on orders over $400, calculated on the grand total before tax and shipping. Applying the code lowers the subtotal that gets measured against that $400 threshold. In other words, the discount and the shipping perk compete with each other in a narrow band just above $400.
A basket sitting at, say, $430 before the code drops below $400 once 15% comes off, which means the free shipping qualification is lost at the same moment the discount is gained. Whether that is a net win depends on the shipping method chosen, and the site offers USPS Priority, FedEx 2 Day, FedEx Overnight and Saturday delivery for Friday orders — costs for these are not stated in the knowledge, so the comparison has to be made live in the cart. The practical response is to either keep the basket comfortably above $400 after the 15% has been deducted, or accept the paid shipping and take the cash discount. Baskets well under $400 face no conflict at all, since shipping would have been paid regardless.
Several limits mean the 15% may not apply to everything you intended to buy:
Percentage coupons of this kind generally do not stack with other codes, so PCT15 is an either/or choice against any other discount you hold.
Some stores exclude already-reduced items from coupon eligibility, and whether specific already-discounted products at BioLongevity Labs accept the code is not stated. It has to be checked in the cart.
Whether the code stacks with sitewide sales is also unconfirmed. The sensible test is to compare the sale price directly against the coupon-discounted price and take whichever is lower.
No code applies to out-of-stock items showing a waitlist button, so a waitlisted vial size contributes nothing to the discount.
Because many products — including BPC-157, TB-500, Epithalon, NAD+, Cartalax and MOTS-c — come in variants such as different vial sizes or quantities, and in formats including lyophilised vials, capsules and topical preparations, the variant you select changes the base price and therefore the size of the saving.
The store runs on a standard WooCommerce setup, with an age verification gate before browsing the shop. To redeem:
Browse the catalog at biolongevitylabs.com and select product variants before adding to cart.
Open the cart or go to checkout.
Click the 'Have a coupon? Click here to enter your code' link, type PCT15, then press Apply.
Check that a discount line appears between subtotal and total showing 15% removed.
Enter shipping details, choose a delivery method and pay.
Coupon fields are usually case-insensitive but reject stray characters, so a trailing space is the most common reason an otherwise valid code fails.
The discount does not change what ships with the order. Every batch ships with a Certificate of Analysis from an independent CLIA-certified facility, and orders include Certificates of Analysis, HPLC purity reports and LC-MS molecular confirmation. Orders placed, paid and processed before 12 noon PST typically ship the same business day; those after the cutoff or on weekends and holidays ship the following business day.
Products are sold for research and development use only and are not intended to diagnose, treat, cure or prevent any disease. BioLongevity Labs is not a supplement store or pharmacy, and the 15% is a discount on laboratory materials rather than on consumer goods.
Web page: BioLongevity Labs Coupon Code PCT15: A First-Timer's Walkthrough
Colab notebook: BioLongevity Labs Coupon Code PCT15: A First-Timer's Walkthrough
Gamma doc: BioLongevity Labs Coupon Code PCT15: Your Questions Answered
NotebookLM report: BioLongevity Labs Coupon Code PCT15: Your Questions Answered
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