Description
Product Overview
SeamlessBio Human Serum — Heat Inactivated, Mixed Gender Donors, EU/US Origin is a pooled human serum collected from male and female donors at certified EU and US donor centers, heat inactivated at 56 °C for 30 minutes, and sterile filtered at 0.2 µm. Heat inactivation eliminates complement proteins — the primary cause of non-specific cytotoxicity and interference in cell viability assays, immunological experiments, and antibody-based workflows — without altering the growth-promoting protein fraction. It is the standard format for primary human cell culture, immunoassay development, and cell therapy manufacturing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Species / Source | Human — pooled mixed gender donors (male + female) |
| Origin | EU / US — certified, traceable donor centers |
| Processing | Heat inactivated at 56 °C for 30 min (complement destroyed) |
| Filtration | 0.2 µm sterile filtered |
| QC parameters | pH, osmolality, total protein, sterility |
| Storage | –20 °C long-term | +4 °C short-term (use within 4 weeks) |
| Shipping | Cold-chain on dry ice |
| Shelf life | Min. 12 months from manufacture |
| Formats | 100 mL, 500 mL; bulk on request |
| Documentation | CoA, Certificate of Origin (COO), SDS with every order |
| Regulatory | Research Use Only (RUO); GMP-grade available on request |
Applications
| Application | Protocol | Note |
|---|---|---|
| Primary human cell culture | 5–20% heat inactivated human serum in base medium | Complement-free serum is essential for primary immune cells, PBMCs, T cells, NK cells, and dendritic cells — active complement causes lysis and viability loss in sensitive primary cultures |
| Immunoassay and ELISA development | Use as matrix-matched blocking diluent or calibrator matrix | Human serum matrix ensures calibrator and control signal behaviour matches patient sample — reduces matrix-effect-driven assay bias vs. animal serum alternatives |
| Complement-sensitive cell-based assays | Substitute for standard serum as culture supplement | Required for complement-dependent cytotoxicity (CDC) negative controls, viability assays, and any cell-based workflow where complement activation would confound the readout |
| Vaccine and biologics development | Human serum as culture supplement for virus propagation and neutralization assays | Human serum matrix provides physiologically relevant conditions; preferred over FBS for human-adapted virus strains and antibody neutralization titres in human serum background |
| Cell therapy and ATMP manufacturing | Replace FBS with heat inactivated human serum in culture medium | Eliminates xenogenic protein exposure for human T cell, NK cell and dendritic cell expansion — aligned with EMA guidance (EMA/410/01) for minimising animal-derived components in cell therapy manufacturing |
Heat Inactivated Human Serum vs. FBS
Fetal bovine serum (FBS) contains xenogenic proteins that can trigger immune responses in human primary cells and cell therapy products. For immune cell expansion, primary human cell culture, and ATMP manufacturing, human serum eliminates this risk and provides a physiologically matched culture environment. Heat inactivation removes complement proteins present in both human serum and FBS — in human serum, this step is particularly important for primary cell applications where active human complement is directly cytotoxic. EMA guidance (EMA/410/01) explicitly recommends minimising animal-derived culture supplements in cell therapy manufacturing; heat inactivated human serum is the standard alternative.
Also Available
- Human Serum — Gamma Irradiated — enhanced biosafety, broader pathogen reduction
- Human Plasma Bags — multiple anticoagulants available
- Fetal Bovine Serum (FBS) — Heat Inactivated and Standard
Available Formats
| Format | Size |
|---|---|
| Bottle | 100 mL |
| Bottle | 500 mL |
| Bulk | On request |
Key Benefits
Batch Reservation
Reserve validated lots up to 36 months for reproducible long-term cell culture and immunoassay workflows.
Full Documentation
CoA, Certificate of Origin and SDS — from ISO 9001 and ISO 13485 certified partner facilities. Additional documents on request.
EU & Swiss Supply
Sourced from certified EU and US donor centers — fast cold-chain delivery across EU, UK and Switzerland.
Frequently Asked Questions
What does heat inactivation of human serum do, and why is it necessary?
Heat inactivation at 56 °C for 30 minutes destroys the complement system — a set of serum proteins (C1–C9) that form membrane attack complexes on cell surfaces. In non-heat-inactivated serum, active complement can lyse cells directly or trigger inflammatory signalling cascades that confound cell viability, proliferation, and immunological assay readouts. Heat inactivation eliminates this activity without significantly affecting the albumin, transferrin, growth factors, and adhesion proteins that support cell growth. For primary human cells — particularly immune cells, PBMCs, T cells, and dendritic cells — heat inactivated serum is the standard format because active human complement is directly cytotoxic to human primary cell cultures at the serum concentrations used in standard culture protocols.
What is the difference between heat inactivated and gamma irradiated human serum?
Heat inactivation (56 °C, 30 min) selectively destroys complement proteins by thermal denaturation — it does not inactivate viruses, mycoplasma, or other pathogens, and has minimal effect on growth factors and immunoglobulins. Gamma irradiation (typically 25–40 kGy) provides broad-spectrum pathogen reduction — inactivating viruses, bacteria, mycoplasma, and prions — while preserving most serum proteins. Gamma irradiated serum carries a higher biosafety assurance and is preferred where pathogen reduction must be documented for regulatory purposes (BSL-2+ work, GMP-adjacent workflows, or serum used in combination with live attenuated virus). Heat inactivated serum is the standard choice for routine primary cell culture, immunoassays, and complement-sensitive experiments where complement removal is the primary requirement and the pathogen risk profile is acceptable for RUO work.
Why use human serum instead of FBS for primary human cell culture?
Fetal bovine serum introduces xenogenic proteins — bovine albumin, bovine IgG, bovine transferrin — that activate innate immune responses in human primary cells, particularly T cells, NK cells, and dendritic cells. This leads to non-specific activation, altered cytokine secretion profiles, and reduced viability in sensitive immune cell cultures. Human serum eliminates xenogenic exposure, provides human-matched growth factors and carrier proteins, and better reflects physiological conditions for human primary cells. For cell therapy and ATMP applications, EMA guidance (EMA/410/01) explicitly recommends minimising or eliminating animal-derived culture supplements; heat inactivated human serum is the standard replacement used in GMP-adjacent and clinical-grade primary cell expansion protocols.
Is heat inactivated human serum suitable for GMP manufacturing?
This product is supplied as Research Use Only (RUO). GMP-grade human serum with extended documentation — including detailed donor screening records, viral marker test reports, sterility certificates, and lot traceability documentation — is available on request. GMP material is produced under the same heat inactivation and filtration conditions and sourced from the same certified EU and US donor centers, with additional quality system documentation to support IND/BLA filings and EMA submissions. Contact our team with your specific GMP documentation requirements and we will confirm availability and lead time.
Can I reserve a specific batch of heat inactivated human serum for long-term use?
Yes — batch reservation is available for up to 36 months. This is strongly recommended for long-term cell culture programmes, immunoassay development, and cell therapy manufacturing workflows where lot-to-lot consistency is critical. Human serum composition varies between donor pools — total protein content, immunoglobulin profile, and growth factor levels differ across lots. Reserving a single validated lot at the start of a project eliminates lot-change validation requirements over the duration of the programme. Contact our team with your required volume and timeline and we will hold the validated lot under controlled storage conditions until your delivery schedule is confirmed.
Request a Quote or Sample
48h response · EU & Swiss Supply · Batch reservation available · Full documentation
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