Analytical Test Lab question; HPLC/MS

[tommyguns2]

Hey guys,

I have a question for those of you that have used an analytical test lab like Freedom or Jansohik to test multiple vials of a substance (peptide or other).

Let's say you've got 5 different peptides you want tested for identity, quantity and purity. You go onto the test lab's website and order the 5 tests. You then receive an email from the test lab providing you instructions on how to send the samples to the lab. If the 5 vials you want tested are nicely labeled with the name and quantity of the peptide (e.g., BPC-157, 10mg), no problem. The lab receives the vial and knows exactly what vial is associated with the order number. But what if your 5 peptides are known to you, but unlabeled? That is, you received a kit of Reta (10mg), and each vial in the kit is unlabeled, but the kit's packaging tells you what it is? When you are going to send the sample with 4 other different sample vials that are similarly unlabeled, what do you do (or what does the lab tell you to do), to ensure that the lab knows which vial is which?

I suppose one solution is the test lab sends you an email, telling you your bulk order is order #500, and each vial is 500.1 (Reta/10), 500.2 (Reta/20), 500.3 (BPC/10), 500.4 (MOTSC/5) and 500.5 (MOTSC/10), based on the orders you put into the shopping cart on the test lab's website, and the lab instructs you to mark each vial appropriately. The lab can give you that list to print out, and you then cut each order number out, and tape each one individually to a blank vial, but that seems like a pain. Another option is the lab mailing you a sheet of label stock with those individual order numbers printed on separate labels that you then place on the vial, but that's a huge waste of time and money, as you have to wait for receipt of the labels in the mail before you send, plus you have to provide an address, which you otherwise would not have to do (just an email address).

When you've requested bulk testing from a test lab, what procedure have you gone through to make sure each vial is properly identified before you send it to the lab to avoid a mix-up?

 

[hogan87]

Why would you need to label each vial? The lab is supposed to tell you what each vial is and how much product. I would label each one with NON-identifying markings.

 

[cage99]

I never sent in a peptide, but have sent PDE5’s and AAS. I’ve just sent in the samples labeled with something like G123, K555, M876, etc, and said it’s an AAS or PDE5, and I need to know what the compound is and the dosage. Got my results and was happy with the lab results.

Cage

 

[Sectør]

blind testing is better than labeling it.

Like others said—you’re paying them to tell you what’s in the vial. If you send them already labeled vials they could just make up whatever and tell you what you want to hear

By leaving it unlabeled, it should provide more assurance.

Or if you really want to find out if they’re doing things right you could even label them incorrectly (call the bpc157 something else) and see if they catch it

 

[tommyguns2]

I was thinking of a peptide reseller. They purchase 50 kits of 30 different peptides and wants to test them before putting his label on them and selling them. In that case, he has reason to believe peptide A is in fact peptide A and just wants to confirm identity, quantity and purity.

 

[tommyguns2]

Janoshik has a blind AAS test listed on his website, but I don’t see a blind test for peptides offered. It’s certainly possible to do but the design method to do it is very inefficient. Basically, a scouting run, which would require a long, slow ramp of the mobile phase

 

[specter]

I sent Janoshik 4 vials of peptides, i told him wich 4 peptides should be present in the vials, but not what vial contained what.