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SeamlessBio rHSA Economy Grade is a cost-effective, animal-free recombinant human serum albumin produced in genetically modified rice endosperm cells (Oryza sativa). Purified by single-step chromatography to 90–99% purity with endotoxin <5 EU/mg — the right choice for IVD blocking reagents, diagnostic reference materials, cosmetic formulation, and method development where budget matters.
Fully TSE/BSE-free, no animal raw materials, available as lyophilized powder from EU stock. For applications requiring ≥99% purity and ultra-low endotoxin, see the rHSA Premium Grade.
| Parameter | Specification |
|---|---|
| Expression system | Rice (Oryza sativa) endosperm — 100% animal-free |
| Purity (SDS-PAGE) | 90–99% — 1-step chromatography (HYC002R02) |
| Bacterial endotoxins | <5 EU/mg (LAL method) |
| pH | 6.0–8.0 |
| Form | Lyophilized powder |
| Reconstitution | Sterile PBS or 0.9% NaCl; fully soluble within 15 min |
| Storage | 2–8 °C; shelf life 5 years from manufacture |
| TSE/BSE status | TSE/BSE-free — no animal raw materials used |
| Manufacturer | Wuhan Healthgen Biotechnology Corp. (Oryzogen); distributed under SeamlessBio label |
| Regulatory | For Research Use Only (RUO). CoA, CoO and SDS on request. |
| Application | Function of rHSA Economy Grade |
|---|---|
| IVD reagent manufacturing | Cost-effective blocking agent and carrier protein for ELISA kits, lateral flow assays, immunoturbidimetric assays, and clinical chemistry reagents where standard endotoxin tolerance applies. |
| Diagnostic reference standards | Matrix protein for calibrators and quality control materials in diagnostic assays. |
| Cosmetics & personal care | Animal-free, human-identical protein ingredient for skin care, hair care, and anti-ageing formulations. |
| Enzyme & protein stabilisation | Carrier and stabiliser for enzymes, antibodies, and other proteins in research buffers and storage solutions. |
| Research & assay development | Economical option for method development, protein binding studies, and screening experiments where premium purity is not required. |
| Grade | Purity | Endotoxin | Best For |
|---|---|---|---|
| rHSA Premium Grade | ≥99% | <0.125 EU/mg | Cell culture, ATMP, IVD |
| rHSA Economy Grade (this product) | 90–99% | <5 EU/mg | IVD, Cosmetics, Blocking |
| rHSA CHO-Expressed | ≥95% | <1 EU/mg | ADME, drug formulation |
| Advantage | Description |
|---|---|
| ✔ EU warehouse stock | Fast delivery across Germany, Austria, Switzerland and the EU |
| ✔ Direct contact | Speak to a scientist in German or English |
| ✔ Full documentation | CoA, CoO and SDS available for every lot on request |
| ✔ Batch reservation | Reserve a specific lot for your entire project duration |
Prices and pack sizes on request: info@seamlessbio.de | +49 851 37932226
Feedback from our valued business partners
We have been working with Seamless Bio for several large orders, and the service is consistently outstanding. Fast dispatch, careful packaging, and excellent communication make them a trusted supplier for our lab needs.
Seamless Bio always delivers on time with top-quality products. Their team is proactive and helpful, ensuring that every order meets our exact specifications. A true partner in our daily operations.
