Frequently Asked Questions

Find answers to the questions researchers ask us most often.

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🛡 Is every batch tested?

Yes. Every batch undergoes independent HPLC purity testing by Janoshik Analytical, an independent peptide analysis laboratory based in the Czech Republic.

Our reported purity consistently exceeds 99%.

Where available, a printed Certificate of Analysis (COA) is included with your order. If a COA has not yet been issued for the current batch, the verification record can be found on our Purity page.

Each certificate includes a unique verification code that can be validated directly through Janoshik’s verification portal, providing independent confirmation of the analytical results.

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💧 Reconstituting Your Lyophilised Powder

Step 1

Clean the vial stopper using one of the supplied alcohol wipes and allow it to dry completely.

Step 2

Using an insulin syringe, draw 2 mL of bacteriostatic (BAC) water from the supplied vial.

Step 3

Slowly inject the BAC water down the inside wall of the peptide vial. Avoid spraying the liquid directly onto the powder.

Step 4

Gently swirl the vial until the powder has completely dissolved. Do not shake. Refrigerate after reconstitution.

A quick-reference reconstitution guide is included inside the product packaging.

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💉 Pen Setup & Operation

Attach a Needle

Clean the pen tip with an alcohol wipe, then securely attach a new sterile needle.

Prime the Pen

Turn the dose dial one click, hold the pen upright, and press the injection button until a small droplet appears at the needle tip.

Set the Required Dose

Each click delivers a fixed dosing increment based on the pen calibration. Adjust the dial according to your research protocol.

Administration Route

Published studies have used subcutaneous administration in the abdomen, thigh, or upper arm. Rotate sites between administrations where applicable.

After Use

Dispose of the used needle in an approved sharps container, replace the pen cap, and refrigerate.

One refill cartridge provides the number of doses specified for your selected protocol and pen size.

Research use only. This information is provided for laboratory reference and is based on published research literature. It should not be interpreted as medical guidance.

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❄ Storage Guidelines

Lyophilised Powder

• Store at 2–8°C
• Protect from light
• Keep sealed
• Stable for up to 24 months
• Do not freeze

After Reconstitution

• Refrigerate at 2–8°C
• Use within approximately 30 days
• Keep in the original vial
• Do not shake
• Discard if the solution becomes cloudy or discoloured

BAC Water

Once opened, refrigerate and use within 30 days.

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📍 Administration Route Used in Published Research

Published pharmacokinetic and Phase II/III studies investigating dulaglutide have utilised subcutaneous administration, typically in the abdomen, thigh, or upper arm. Research protocols generally rotate administration sites to minimise local tissue irritation.

This information is provided solely as background from published scientific literature and should not be interpreted as instructions for human use.

Reference: Glaesner et al. (2010)

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🎯 Selecting an Appropriate Research Dose

Published research involving dulaglutide typically follows a gradual titration schedule, beginning with a lower dose before increasing at predefined intervals.

Researchers should follow the protocol relevant to their study design. Gradual titration has been commonly employed in the literature to minimise gastrointestinal adverse events during clinical investigations.

If your research follows a non-standard protocol, our team can help identify the most appropriate product size based on your planned schedule.

Research use only. Any dosing information referenced is derived from published scientific literature and is provided solely for research context.

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Product Information

Specification	Details
Compound	Dulaglutide
Research Category	Metabolic Research
Available Sizes	5 mg, 10 mg
Format	Lyophilised powder in sealed glass vial
Purity	>99% (HPLC verified by Janoshik Analytical)
Intended Use	Laboratory research only. Not for human consumption.

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Chemical & Reference Data

Property	Value
Compound Class	GLP-1 receptor agonist Fc-fusion protein
Molecular Formula	Recombinant Fc-fusion (GLP-1 dimer fused to modified IgG4 Fc)
Molecular Weight	Approximately 63 kDa
CAS Number	923950-08-7
Structure	Two GLP-1 analogue chains linked to a modified human IgG4 Fc fragment
Mechanism	GLP-1 receptor agonist with Fc-mediated extended half-life
Reported Half-Life	Approximately 5 days (human serum)
Solubility	Reconstitutes in bacteriostatic water for laboratory use
Lyophilised Storage	2–8°C for up to 24 months
Reconstituted Storage	2–8°C; typically use within 4–6 weeks
Regulatory Status	Approved by MHRA (2014) for relevant indications

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Research Profile

• GLP-1 receptor agonist
• Fc-fusion protein design
• Extended half-life
• Third-party HPLC verified
• Laboratory research use only

Dulaglutide is a GLP-1 receptor agonist engineered as an Fc-fusion protein, providing a prolonged half-life compared with native GLP-1. It is supplied as a lyophilised powder for in-vitro laboratory research only.

Descriptions provided are based on published scientific literature and should not be interpreted as claims regarding clinical outcomes or therapeutic effects.

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Laboratory Handling

Dulaglutide is supplied as a sterile lyophilised powder in a sealed glass vial.

For laboratory reconstitution, slowly add the desired volume of bacteriostatic water down the inside wall of the vial. Swirl gently until fully dissolved. Avoid vigorous shaking or vortexing.

Store reconstituted solutions at 2–8°C and use within 4–6 weeks, depending on laboratory protocol.

State	Storage Temperature	Typical Shelf Life
Lyophilised	2–8°C or -20°C	Up to 24 months
Reconstituted	2–8°C	Approximately 4–6 weeks

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Purity Verification

Every batch is independently analysed by Janoshik Analytical using HPLC testing.

Where available, a Certificate of Analysis accompanies each order and includes a unique verification code that can be confirmed directly through Janoshik’s verification system.

Reported purity consistently exceeds 99%.

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Related Research Compounds

Researchers studying dulaglutide frequently investigate related GLP-1 receptor agonists, including:

• Semaglutide
• Tirzepatide
• Liraglutide

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Key Reference

Glaesner W. et al. Engineering and Characterisation of Dulaglutide (2010). PMID: 26252029.

References are provided from independent peer-reviewed scientific literature. They are included for research purposes only and do not imply endorsement or affiliation.