A heavy metal panel on a Peptara Labs certificate lists named elements: arsenic, cadmium, chromium, mercury and lead. It says nothing about elements it doesn't list. On the certificates we index, all five read Not Detected on the published batches. Not Detected means below a reporting threshold, not absent. A sixth element is outside the panel, not below it.
Which elements are on Peptara Labs heavy metal panel?
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Peptara Labs publishes a heavy metals screen naming arsenic, cadmium, chromium, mercury and lead, and on its published batches all five read Not Detected. A panel says nothing about elements it doesn't list. Results are at peptaralabs.io/coa.
01 / What does the metals panel measure?
Five named elements: arsenic, cadmium, chromium, mercury and lead. All five came back Not Detected on the published batches. That's five readings against five targets, and nothing wider.
Not Detected means below the method's reporting threshold, not absent. Reading it as zero is the reader's step, not the lab's. It's a narrower statement than "none".
Does Not Detected mean a peptide is free of heavy metals?
No. Not Detected means a named element was below the method's reporting threshold in the sample tested. That's narrower than absent. Reading it as zero is the reader's step, not the lab's. The metals block is at peptaralabs.io/coa.
02 / What about other metals?
A five element panel says nothing about a sixth, and Not Detected means below a threshold, not absent.
We don't show a numeric threshold because the record doesn't have one. A sixth element is outside the panel, not below it, because the test never looked for it.
03 / Where did we read it?
From the Titreon Analytical panel at peptaralabs.io/coa, metals block. We list the five elements because the panel prints them. No reporting limit was recorded, so we show none.
Does Peptara Labs publish heavy metal results per batch?
Peptara Labs publishes certificates of analysis on its certificate index, each from a recent batch and issued by Titreon Analytical, with the metals block among their lines. A reading belongs to the batch sampled, not any other. The certificates are at peptaralabs.io/coa. A certificate shows what one lot tested as; it does not show a product is safe or approved for use in people.