IGF-1 LR3 1mg

IGF-1 LR3 1mg is a 1mg vial of IGF-1 LR3, an IGF-1 analog, supplied as freeze-dried powder. It’s for in-vitro and lab research only.

What is IGF-1 LR3?

IGF-1 LR3 is an 83-amino-acid analog of IGF-1 with an arginine swap at position 3 and a 13-amino-acid extension. Those changes stop it binding IGF binding proteins, so it stays active much longer.

It’s widely used in cell culture media.

How IGF-1 LR3 acts in the lab

IGF-1 is the hormone that carries out much of growth hormone’s effect on cells. Most of it in the body is bound by IGF binding proteins, which hold it inactive.

LR3 has an arginine in place of glutamate at position 3 plus a 13-residue extension. Binding proteins barely recognize it, so it stays free and active far longer. That’s why it’s the standard IGF-1 in cell culture media.

IGF-1 LR3 1mg specifications

• Compound: IGF-1 LR3
• Also known as: Long R3 IGF-1
• CAS number: 946870-92-4
• Molecular formula: C400H625N111O115S9
• Molar mass: 9,111 g/mol
• Structure: 83 amino acids
• Amount: 1mg per vial
• Form: lyophilized (freeze-dried) powder
• Label: compound name and amount printed on every unit
• SKU: IGF1-1
• Use: laboratory research only

IGF-1 LR3 research

It was developed for cell culture in the 1990s.

In cell culture it’s several times more potent than IGF-1.

To read the papers yourself, start with this PubMed search for IGF-1 LR3.

IGF-1 LR3 1mg reconstitution and concentration

The amount of liquid you add sets the concentration. For a vial holding 1mg:

• 1mL of bacteriostatic water gives 1mg/mL
• 2mL of bacteriostatic water gives 0.5mg/mL

Choose the volume that suits your measurements. Mark the vial with the concentration and date so nobody has to guess later.

Bacteriostatic water is the usual choice, and acetic acid helps with peptides that won’t dissolve in water alone. Add it slowly so it runs down the side of the vial, then swirl or roll until everything dissolves. Shaking can shear peptide chains. Skip it.

How to store IGF-1 LR3 1mg

Store sealed vials of IGF-1 LR3 1mg in the freezer at -20°C, out of direct light. Mixed solution goes in the fridge at 2 to 8°C and should be used within about 28 days.

Let a frozen vial warm up to room temperature before you open it. Cold glass pulls moisture out of the air, and moisture is what degrades dry peptide.

IGF-1 LR3 1mg quality and handling

The vial label shows the compound and the amount. For anything your lab needs on file beyond that, email Peptira support with the product name before you place the order.

If you verify incoming material yourself, the standard methods are HPLC for purity and mass spectrometry for identity. HPLC splits the sample and reports the main peak as a percentage, while mass spec confirms that peak has the right molecular weight.

Write the order date and the vial details into your lab notes. If a result looks odd later, you can tie it back to the exact material you used.

How many IGF-1 LR3 1mg vials do you need?

Start from the protocol. Total the amount every arm needs from the first time point to the last, divide by the 1mg in a vial and add a spare. It’s cheaper to order once than to wait on a second shipment halfway through.

Only reconstitute what you’ll use in the next few weeks. Sealed vials stay stable in the freezer, while a mixed vial should be finished within about 28 days.

If you order more than one vial, check that the batch numbers match before you start. Running a whole study on one batch removes one variable.

Other growth hormone peptides to look at

• CJC-1295 DAC 5mg, a long-acting GHRH analog
• Ipamorelin CJC-1295 Blend 10mg, Ipamorelin and CJC-1295 No DAC in one vial
• Tesamorelin 10mg, a GHRH analog
• Sermorelin 10mg, a GHRH analog
• GHRP-6 5mg, a GH releasing peptide

Browse the full growth hormone peptides and healing and recovery peptides range, see every vial on our research peptides page or head back to the Peptira home page.

IGF-1 LR3 1mg FAQ

How much is in the IGF-1 LR3 1mg vial?

1mg of freeze-dried powder. The amount is printed on the label.

What do I mix IGF-1 LR3 1mg with?

Sterile bacteriostatic water is the usual choice. The reconstitution section above shows the concentration for each volume.

How should I store it?

Keep sealed vials in the freezer at -20°C. Once mixed, refrigerate at 2 to 8°C and use within about 28 days.

Can IGF-1 LR3 be used in people or animals?

No. It’s sold for laboratory research only and isn’t approved for human or veterinary use.

Is IGF-1 LR3 1mg in stock?

Yes. IGF-1 LR3 1mg is in stock and ready to ship.

Order IGF-1 LR3 1mg today

IGF-1 LR3 1mg is in stock at $69.00. Add it to the cart, enter code PEPTIRA10 at checkout for 10% off, and shipping is free worldwide. Paying with crypto at checkout takes a little more off.

Need more for the same project? See the rest of our growth hormone peptides and healing and recovery peptides, or go back to the Peptira home page.

For laboratory research use only. Not for human or veterinary use. These statements have not been evaluated by the FDA.