IGF-1 LR3 frequently asked questions
Answers about IGF-1 LR3, how it is tested, how to read and verify its certificates, ordering, and IGF-1 LR3 Labs. Figures update automatically from the current lot data.
Last updated
Product
What is IGF-1 LR3?
IGF-1 LR3 is a 83-residue IGF-1 analog designed for activity at the IGF-1 receptor (IGF1R). IGF-1 LR3 Labs supplies it as a lyophilized powder in 1 mg vials, with an independent certificate of analysis for every lot.
What is IGF-1 LR3 research material?
IGF-1 LR3 research material is IGF-1 LR3 supplied for laboratory research, sold by lot, with each lot's identity, purity and net content documented by an independent laboratory in a published certificate of analysis.
What is the molecular formula and weight of IGF-1 LR3?
The molecular formula is C400H619N111O115S9 and the average molecular weight is 9111.55 g/mol. The peptide has 83 residues.
How should IGF-1 LR3 be stored?
Store sealed, dry and protected from light at the temperature stated on the vial label. Allow a cold vial to reach room temperature before opening.
What does LR3 mean in IGF-1 LR3?
L (long) refers to the 13-residue N-terminal extension; R3 refers to arginine at position 3 of the IGF-1 sequence in place of glutamate.
What size is IGF-1 LR3 sold in?
1 mg vials through Klow.bio. The current lot measured 1.04 mg in the tested vial.
Testing and quality
How is IGF-1 LR3 analyzed?
IGF-1 LR3 is analyzed with complementary methods: HPLC-UV for purity, HPLC-RTM for identity, a quantitative measurement for net content, and, where listed, LAL endotoxin and PCR microbial testing. Results are published per lot at igf1lr3.bio/coa/.
Who tests IGF-1 LR3?
Every lot is tested by ILS Laboratories, an independent third-party analytical laboratory. IGF-1 LR3 Labs does not test its own material for published certificates.
What purity does IGF-1 LR3 test at?
Current lots report HPLC-UV purity 99.69%, against a stated release specification of ≥95%. The most recent result is 99.69% for lot KB-17790.
How is the identity of IGF-1 LR3 confirmed?
By HPLC retention-time comparison with a reference standard (HPLC-RTM), performed by ILS Laboratories on every lot. The laboratory runs the sample and a reference standard of the named compound under the same HPLC conditions; identity is confirmed when the main peak elutes at the reference standard’s retention time.
Is IGF-1 LR3 tested for endotoxin?
Endotoxin and microbial testing are reported per lot. Every lot page in the COA archive states whether those tests were performed.
What is HPLC testing, and what does the purity percentage mean?
HPLC (high-performance liquid chromatography) separates a sample's components so each appears as a peak. The purity percentage is the main peak's share of all UV-detected peak area. It does not confirm identity (the separate HPLC-RTM test does) or measure the amount of peptide in the vial (net content does).
Certificates of analysis
What is a IGF-1 LR3 COA?
A IGF-1 LR3 certificate of analysis is the testing laboratory's report for one lot: the lot number, test dates, methods and results for purity, identity and net content. IGF-1 LR3 Labs publishes every lot's COA as a readable page at igf1lr3.bio/coa/.
Where can I find the COA for my vial?
Find the lot number printed on your vial label and enter it at igf1lr3.bio/verify/, or open that lot in the COA archive at igf1lr3.bio/coa/.
How do I confirm a COA with the laboratory?
Go to portal.ils-lab.com (or scan the QR code on the certificate) and enter the lot's verification access code, listed on its lot page, to view the laboratory's own copy of the certificate.
Why is the measured net content different from the vial size?
Net content is the laboratory's measurement of peptide in the tested vial. Current lots measured 1.04 mg in a 1 mg vial.
Buying IGF-1 LR3
Where can I buy IGF-1 LR3?
Current IGF-1 LR3 research material availability is provided through Klow.bio, the purchasing platform operated by Klow Labs: https://klow.bio/product/igf-1-lr3/ Lot records, testing information and certificates of analysis are published on igf1lr3.bio so they can be reviewed before purchasing.
Can I order IGF-1 LR3?
Yes. Purchasing information and current availability for IGF-1 LR3 research material are provided through Klow.bio: https://klow.bio/product/igf-1-lr3/
Is every IGF-1 LR3 lot independently tested?
Yes. Every lot is tested by ILS Laboratories, an independent laboratory, for HPLC-UV purity, HPLC-RTM identity and net content. The stated release specification is ≥95% HPLC-UV purity with identity confirmed by HPLC retention-time match against a reference standard. The current lot, KB-17790, reported 99.69% purity.
How can I verify a IGF-1 LR3 lot?
Enter the lot number from your vial label at igf1lr3.bio/verify/ to see that lot's results. To confirm with the laboratory directly: Go to portal.ils-lab.com (or scan the QR code on the certificate) and enter the lot's verification access code, listed on its lot page, to view the laboratory's own copy of the certificate.
How much does IGF-1 LR3 cost?
The current price is $69.99, with bundle pricing (2 vials save 5%; 3 or more vials save 10%). Current pricing is always listed on Klow.bio.
How fast does IGF-1 LR3 ship?
Orders ship the next business day. Same-day cutoff is 4:00 PM CT, with overnight and 2-day options at checkout.
Company
Who is IGF-1 LR3 Labs?
IGF-1 LR3 Labs is a dedicated IGF-1 LR3 research supplier with a controlled sourcing and quality-assurance program. Research material is sourced through our qualified manufacturing supply chain and subjected to analytical testing and lot-level documentation before release. IGF-1 LR3 Labs is operated by Klow Labs LLC in Chicago, IL. Purchasing is handled through Klow.bio.
Who operates IGF-1 LR3 Labs?
IGF-1 LR3 Labs is operated by Klow Labs LLC, 3838 N Ravenswood Ave PMB 2027, Chicago, IL 60613. Klow Labs LLC also operates klow.bio.
Does IGF-1 LR3 Labs provide medical or usage advice?
No. IGF-1 LR3 Labs supplies research material and publishes analytical documentation. It does not provide medical advice, dosing, administration guidance or protocols.
How do I contact IGF-1 LR3 Labs?
Email contact@klow.bio, call (708) 262-7687, or use the contact form at igf1lr3.bio/contact/.
Didn't find your answer? Contact IGF-1 LR3 Labs and include your lot number if your question is about a specific vial.
Buy IGF-1 LR3
1 mg vials. Current lot KB-17790 tested at 99.69% purity with identity confirmed by HPLC retention-time match against a reference standard. Current purchasing is available through Klow.bio.