Custom peptide synthesis Thermo Fisher services explained: peptide lengths, purity options, turnaround times, and what drives custom peptide pricing.
Thermo Fisher Scientific does offer custom peptide synthesis, producing made-to-order peptides from short sequences up to roughly 50 amino acids at milligram to gram scale. Customers submit a sequence, choose purity and modifications, and receive lyophilized peptide with a certificate of analysis. The sections below explain how the service works, what drives cost, and how it compares with other suppliers.
What "Custom Peptide Synthesis Thermo" Refers To
The search term custom peptide synthesis thermo fisher points to the custom peptide manufacturing services sold by Thermo Fisher Scientific, a large life-science supplier that also sells reagents, instruments, and catalog peptides. Its custom service handles standard linear peptides, labeled peptides, and many modified residues.
Most buyers reach this keyword because they already order lab supplies from Thermo Fisher and want to consolidate purchasing, invoicing, and documentation with one vendor. Consolidation is a genuine advantage for core facilities that need consistent QA paperwork and a single purchase-order process.
How the Synthesis Workflow Runs
- Quote and sequence review. You submit sequence, scale, purity, and modifications; the vendor flags difficult stretches such as long hydrophobic runs or aggregation-prone motifs.
- Solid-phase synthesis. Most commercial peptides are built by Fmoc solid-phase peptide synthesis, adding one protected amino acid at a time to a resin.
- Cleavage and deprotection. The peptide is cleaved from the resin and side-chain protecting groups are removed.
- Purification. Reverse-phase HPLC removes truncated sequences and byproducts.
- Quality control. Analytical HPLC confirms purity and mass spectrometry confirms molecular weight.
- Lyophilization and delivery. The peptide is dried, aliquoted, and shipped with documentation.
Purity, Scale, and Turnaround at a Glance
Options vary by sequence and by the production site handling your order, so treat the table below as a general map rather than a fixed menu. Confirm exact specifications on your written quote.
| Specification | Common options | Typical use case |
|---|---|---|
| Length | About 5–30 residues routine; 30–50+ specialty | Screening assays vs. structural work |
| Scale | 1–5 mg, 10–25 mg, 50–100 mg, 1 g and up | Pilot assays vs. immunization or scale-up |
| Purity | About 70% desalted, 85%, 95%, 98%+ | Crude screening vs. sensitive bioassays |
| Modifications | Biotin, fluorescent dyes, phosphorylation, cyclization, amidation | Labeling, stability, and binding studies |
| Turnaround | Often 2–4 weeks standard; rush options vary | Project timelines and grant deadlines |
| Documentation | HPLC trace, mass spectrum, certificate of analysis | Publication and regulatory support |
What Drives Peptide Synthesis Price
Peptide synthesis price is driven almost entirely by how much work your sequence demands. Two peptides of identical length can differ several-fold in cost.
- Length: each added residue lowers yield and raises cost, with a steep climb past roughly 25–30 residues.
- Purity: 95% and 98% grades require more HPLC time and more starting material.
- Scale: larger batches need more resin and reagents, though cost per milligram usually falls.
- Modifications: dyes, biotin, phospho-residues, and cyclization add synthesis and QC steps.
- Difficulty: hydrophobic, aggregation-prone, or highly charged sequences may need special chemistry.
- Batch count: ordering many peptides at once can spread out per-peptide minimum charges.
Regional differences matter too. Labs often compare custom peptide synthesis india quotes and large Asian CROs against US and EU suppliers, but lower headline pricing can be offset by shipping, customs, longer transit, and variable documentation.
Comparing Custom Peptide Vendors
| Vendor type | Strengths | Trade-offs |
|---|---|---|
| Thermo Fisher Scientific | Broad catalog, consolidated purchasing, established QA | Premium pricing; rarely the cheapest per milligram |
| Specialty houses such as ProteoGenix | Hard modifications, peptide libraries, custom immunoassays | Quote-based; lead times vary by project |
| Catalog-plus-custom suppliers such as AnaSpec | Catalog and custom peptides, dyes, enzyme substrates | Availability depends on sequence complexity |
| Regional EU and AU specialists | Local turnaround, in-region invoicing, less import friction | Higher labor costs than offshore suppliers |
| Large offshore CROs | Low cost at scale, high throughput | Longer shipping, variable QC paperwork |
Many labs split their orders: routine screening peptides go to a low-cost provider, while modified or publication-critical peptides go to a specialist such as proteogenix peptide synthesis or anaspec peptide synthesis. That mix balances budget against data quality.
Quality, Documentation, and Safety Notes
Always request the certificate of analysis, HPLC trace, and mass spectrum before running assays. These documents confirm identity and purity, and reviewers frequently ask for them during publication.
Custom peptides are sold for research use only and are not FDA-approved drugs. Anyone considering peptides for human use should talk with a licensed healthcare professional rather than relying on supplier websites or forum posts.
How to Get an Accurate Quote
- Write the sequence in single-letter code and note any nonstandard residues.
- State scale, purity, and whether you need the peptide amidated or acetylated.
- List modifications, labels, and solubility requirements up front.
- Ask about turnaround, shipping conditions, and how the peptide will be quantified.
- Request quotes from at least two vendors before committing project funds.
Thermo Fisher's custom peptide service is a solid choice for teams that value one vendor, clear documentation, and predictable ordering. For cost-sensitive screening work, comparing several suppliers usually saves more than any single negotiation.
Frequently Asked Questions
Does Thermo Fisher Scientific offer custom peptide synthesis?
Yes. Thermo Fisher Scientific sells custom peptide synthesis through its life-science services, covering standard linear peptides, labeled peptides, and many modified residues. You submit a sequence and receive a quote listing purity, scale, and turnaround options before production begins.
How much does custom peptide synthesis cost?
Pricing depends on length, scale, purity, and modifications, and it varies widely between vendors. Short unmodified peptides at 95% purity often fall in the low hundreds of dollars per peptide from US suppliers, while long, labeled, or ultra-high-purity sequences can cost well over $1,000. Always confirm with a written quote.
How long does custom peptide synthesis take?
Standard orders from major suppliers usually ship about two to four weeks after quote approval. Difficult sequences, specialized modifications, and larger scales extend that timeline, and rush production may be available at extra cost.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.