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Product sourcing reference

IGF-1 LR3

IGF-1 LR3 is a modified insulin-like growth factor analogue used mainly in cell-culture research. It is not the same as approved mecasermin.

Reference variants

Add IGF-1 LR3 to an order request

Quantities are individual vials (packs of 10). Orders need 100 vials and/or 20 spray bottles in total, mixed across items. Prices are reference estimates captured 2026-10-16; every request is pending eligibility and availability review. Per-unit figures are rounded to the cent from kit pricing, so a final quote may differ slightly.

  • 1mgVial · confirm physical formCAS 946870-92-4
    $30.19/vial$24.15/vial at 1,000+ vials of this item
    vials, packs of 10

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Confirm the exact substance

The LR3 variant adds an N-terminal extension and an arginine substitution that reduce binding-protein affinity. Those changes alter its behaviour compared with native IGF-1.

What the review will ask

Ask the requester to describe the intended use. Research-grade growth factors are often supplied for laboratory work rather than clinical preparation.

  • State the facility type, destination state and intended transaction. Do not send patient information.
  • Expect product- and lot-specific documentation to be requested before any material is accepted.
  • A listed price is a reference estimate. Availability, labeling, shipping and terms are confirmed in writing only after review.

Purchasing questions

Is IGF-1 LR3 an approved medicine?

No. Mecasermin is the approved recombinant IGF-1 product. IGF-1 LR3 is a distinct research analogue.

Require the complete analogue designation

A document headed only IGF-1 does not establish that it characterizes the LR3 reference in this catalog. Do not treat a different IGF-related product as the same material for pricing or evidence review.

Documentation to request

Request the sequence or structural specification, analytical identity methods and intended laboratory application. Keep any finished-medicine approval record separate.

Regulatory context: FDA: compounding, approval and quality standards. Source reviewed . This source does not verify the identity, testing or availability of our catalog references.

Related guidance: Hormone clinic purchasing review. These references support a review, not a treatment recommendation or supply authorization.

Verify the current regulatory position

Use FDA human drug compounding guidance and applicable state requirements. This reference is not medical or legal advice and does not establish a lawful supply route.

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