Receiving a Research Peptide Shipment: A Lab Intake Checklist

Why Intake Deserves Its Own Step

A delivery is the first point where you can confirm that what was ordered is what arrived. Once vials are unpacked, mixed into a freezer and opened, mistakes become much harder to trace. A short, repeatable intake routine catches a wrong strength, a missing box or a damaged vial while the packaging and paperwork are still on the bench.

The checklist below is written for laboratories receiving lyophilized research peptides packed in boxes of vials, which is how Flintmarrow lists its catalog. Adapt the fields to your own lab's record system.

Before the Parcel Arrives

Prepare the comparison you will make at the bench. Keep the order confirmation open with the product names, product codes, strengths and box quantities. Decide where incoming material will be logged, and clear space in the storage location you plan to use so the vials do not sit at room temperature while you look for room.

• Order number and order date
• Each line: product name, product code, amount per vial and number of boxes
• The person responsible for intake and the storage location

Step 1: Inspect the Outer Packaging

Look at the carton before you open it. Crushed corners, punctures, water marks or a torn label are worth a photograph even if the contents turn out to be fine. If the shipment included cold packs or a temperature indicator, note their condition on arrival. Do not throw away the carton until intake is complete, because the packaging can matter if anything needs to be reviewed later.

Step 2: Count and Match Every Line

Unpack in a clean, dry area and set the boxes out by product. Count boxes and vials, then match each one against the order line: name, amount per vial and product code. A 5 mg vial and a 10 mg vial of the same compound can look identical apart from the label, so read every label rather than checking a sample.

• Correct product name and strength on every vial
• Number of vials per box matches the listing
• Caps and seals intact, no cracked glass
• Contents present as a dry powder or cake, not liquid

Step 3: Record the Lot Number

Every vial label should carry a lot or batch number. Write it down for each product before the boxes are separated. The lot number is what links the physical vial to its certificate of analysis and to every experiment that later uses it. If one product arrives in more than one lot, record each lot separately and keep those vials apart.

Step 4: Match the Documents

Compare the packing list with what you counted. If a certificate of analysis was provided, check that the lot number on the document is exactly the lot number on the vials, character for character. A COA for a different lot describes different material. If a lot-specific document is part of your procurement requirements and it is missing, ask for it before the vials go into use.

Step 5: Store the Material as Labeled

Move the vials to the storage condition printed on the label or stated on the COA as soon as the counts are done. Lyophilized peptides are generally kept cold, dry and away from light, and repeated warming and cooling is best avoided. When a cold vial is later taken out, letting it reach room temperature before opening keeps condensation from forming on the powder.

Step 6: Log the Intake

A single intake record per lot makes later questions easy to answer. A spreadsheet works; a laboratory information system is better if you have one.

• Product name and product code
• Lot number and number of vials received
• Date received and name of the person who checked it
• Storage location
• COA reference, or a note that it was requested
• Any discrepancy, with photo references

When Something Is Wrong

Hold any vial that is damaged, mislabeled or not what was ordered, and keep it separate from accepted stock. Contact the supplier promptly with the order reference, the affected item, a short description and photographs, and keep the packaging and labels until the issue is resolved. With Flintmarrow orders, do not send anything back before you receive return instructions; the returns policy explains how a request is reviewed.

A consistent intake routine takes a few minutes per delivery, and it is the step that makes every later record in the lab trustworthy.