Research use only

First-order offer

15% off the first order.

Shop from this page and code FREE15 is applied for you at checkout. Nothing to type. One referral code per customer.

CodeFREE1515% off, applied automatically
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Free standard shipping on orders of $150 or more.

The code FREE15 carved into a travertine bench in low sunlight, a frosted cold pack beside it and an unlabelled vial at the far end.

Shipping

Packed cold. Standard shipping free from $150.

Orders ship by FedEx in an insulated shipper with cold packs, to addresses in the US.

  • StandardFedEx Priority2–3 business days
    $14Free on orders of $150 or more
  • OvernightFedEx OvernightNext business day
    $50Never free

The $150 is counted before the discount comes off, so the 15% never costs you free standard shipping.

A small figure in a lab coat looks up at an unlabelled vial standing between two cold packs inside an insulated shipper. Text: It’s winter in here. Insulated shipper. Cold packs. Free shipping on orders $150+.

Subscribe and save

Every product costs less on subscription.

  • 01Lower on every product

    Each product and strength has its own subscription price, below its one-time price, shown on its page.

  • 02Ships every 30 days

    Each renewal is charged at the subscription price plus shipping, on the shipping terms above.

  • 03Card only

    Renewals are charged to the card you subscribe with.

  • 04Cancel any time

    By email. No minimum term.

Certificates of analysis

A certificate for each tested lot.

Each lot we have tested has its own certificate of analysis: signed, dated, and issued by an outside laboratory, Freedom Diagnostics. The certificates are published online, so they can be read before anything is bought.

Not every product or strength has one yet. Where a lot is still with the lab, its page says it is in testing.

A small figure in a lab coat reads a signed certificate leaning against an unlabelled vial. Text: Read the certificate first. Signed, dated, from an outside lab. One for each tested lot. First order, 15% off, code FREE15.

Where we are

Based in Del Mar, California. Ships within the US.

How you can pay

  • Card
  • Zelle
  • Venmo
  • Apple Cash
  • Revolut
  • Crypto

Card is completed on our secure payment page, and subscriptions are card only. Crypto is paid on a hosted checkout page. Zelle, Venmo, Apple Cash and Revolut are transfers you send after placing the order, matched to it by order number.

Ready at checkout

15% off the first order, applied for you.

Code FREE15 is attached to this visit. Nothing to type. One referral code per customer.

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