rHSA Economy
Yeast-expressed recombinant Human Serum Albumin — fully xeno-free, cost-effective for research and early process development. No animal-derived components in the final product. Direct BSA replacement for serum-free applications requiring xeno-free compliance.
Fully Xeno-Free
No animal-derived components in the final product. Full xeno-free documentation on request. EMA/410/01 compliant.
No Donor Variability
Recombinant expression — identical lot-to-lot specification. No batch-to-batch variation from donor pools.
BSA Drop-In Replacement
Direct xeno-free alternative to BSA in serum-free media. Identical carrier function. Typical 0.5–10 g/L.
No Minimum Order
No MOQ. Free test samples on request. 48-hour quote. Lot reservation available.
Product Specifications
| Product | Recombinant Human Serum Albumin — Economy Grade |
| Expression System | Yeast (Pichia pastoris) |
| Xeno-Free | Yes — no animal-derived components in final product |
| Sequence | Human albumin sequence — identical to native HSA |
| Molecular Weight | ~66.5 kDa |
| Purity | ≥96% (SDS-PAGE) |
| Endotoxin | ≤5 EU/mg (LAL) |
| Appearance | Clear to slightly opalescent solution or white lyophilised powder |
| Available formats | Lyophilised powder · Solution on request |
| Packaging | 1 g · 5 g · 10 g · 50 g · 100 g · Bulk on request |
| Storage | +2°C to +8°C (solution) · -20°C (lyophilised) |
| Shelf Life | 24 months from date of manufacture |
| Documentation | CoA per lot · SDS |
| Availability | On request |
| Minimum order | No minimum order quantity |
Applications
- Serum-free cell culture media supplement — xeno-free BSA replacement
- Growth factor stabilisation in defined serum-free media
- DMPK plasma protein binding assays (contact us for fatty acid-free spec)
- Drug delivery research — albumin nanoparticle preparation
- Assay buffer and blocking reagent formulation
- Process development — early-stage media screening
- Cryopreservation buffer xeno-free supplement
- iPSC and primary cell culture serum-free formulations
Economy vs Premium — When to Choose
| Application | Grade |
|---|---|
| Basic research | Economy ✅ |
| Process development | Economy ✅ |
| Media screening | Economy ✅ |
| Cell therapy formulation | Premium |
| ATMP ancillary material | Premium / CHO |
| GMP manufacturing | CHO-Expressed |
Need higher purity? See rHSA Premium (≥99% · ≤1 EU/mg) or rHSA CHO-Expressed.
Frequently Asked Questions
What is rHSA Economy grade?
Yeast-expressed rHSA at a cost-effective price for research and process development. Fully xeno-free. ≥96% purity, ≤5 EU/mg. Suitable for serum-free cell culture, buffer formulation and research where highest purity is not required.
Can rHSA Economy replace BSA?
Yes — direct xeno-free drop-in replacement for BSA in serum-free media. Identical carrier and stabilisation function. Typical concentration 0.5–10 g/L depending on application.
Is rHSA Economy xeno-free?
Yes — no animal-derived components in the final product. Full xeno-free documentation on request.
What is the difference between Economy and Premium?
Economy: ≥96% purity, ≤5 EU/mg — research and process development. Premium: ≥99%, ≤1 EU/mg — cell therapy formulation and GMP-adjacent. Both fully xeno-free yeast-expressed.
Related Products
Request rHSA Economy
On request — free test samples available. 48-hour quote. No minimum order.
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