Why elemental screening is separate
HPLC purity describes organic chromatographic composition under stated conditions. It does not report elemental impurities such as heavy metals.
Identity confirmation by mass spectrometry likewise addresses whether the intended molecule is present. It is not a substitute for elemental analysis.
How to read heavy-metal documentation
Useful heavy-metal documentation should identify the batch, the analytical approach used and the acceptance outcome relevant to that batch.
As with other batch records, results apply to the material tested. They should be matched to the vial through batch traceability rather than assumed from a previous lot.
Peptide Tactics standard
Peptide Tactics includes heavy-metal screening in its contamination-control standard and supplies supporting reports with orders as part of batch documentation.
The stated business standard is that compounds are free from heavy metals under the applicable screening and acceptance requirements used for batch release.
Frequently asked questions
Are heavy metals tested for Peptide Tactics materials?
Yes. Heavy-metal screening is part of the contamination-control standard, and supporting reports are included in batch documentation supplied with orders.
Does HPLC purity detect heavy metals?
No. HPLC purity is a chromatographic measurement of organic species under stated method conditions. Elemental contaminants require separate screening.
Compounds this applies to
The considerations above are not abstract. Each of these compounds is listed in the Peptide Tactics catalog for research use in India, with its reference data, analytical notes and documentation status set out in full.
BPC-157
BPC-157 is a synthetic pentadecapeptide — a chain of fifteen amino acids — corresponding to a partial sequence of the gastric juice peptide BPC (Sikiric et al., Life Sciences, 1994; PMID 7904712). It is listed here as a research catalog item with the compound reference data recorded in public chemical databases.
View listing and pricingTB-500
TB-500 is indexed in PubChem as a specific molecule: the acetylated heptapeptide Ac-LKKTETQ-OH. That sequence includes the conserved hexapeptide actin-binding motif LKKTET found within thymosin beta-4 (Vancompernolle et al., 1992; PMID 1464307), with an additional C-terminal glutamine in the PubChem heptapeptide record. The reference data below describes that record. The name is nevertheless used loosely elsewhere in the research-materials market, which is covered further down.
View listing and pricingNAD+
NAD+ is nicotinamide adenine dinucleotide in its oxidized form. It is a cellular coenzyme and cofactor used in redox metabolism and other biochemical reactions. It is not a peptide, and it should not be read as one because it appears in this catalog.
View listing and pricingSee the full research peptide catalog, the India sourcing guide or batch documentation and analytical reports.
Continue reading
- Sterility versus endotoxin testing for research peptides — Why sterility and endotoxin testing are different contamination-control checks for research peptides, and what each result can establish.
- Understanding peptide certificates of analysis — How to read a peptide certificate of analysis: which fields carry real information, how to spot a template, and what a COA cannot tell you.
- Why peptide batch traceability matters — Why batch traceability links research peptide vials to COAs, HPLC chromatograms and contamination-control reports, and how to verify the chain.