All Grades · All Formats · US Origin · All on Request

Human Serum Albumin (HSA)

Human Serum Albumin (HSA) — the most abundant protein in human blood plasma — in four application grades, multiple concentrations and two packaging formats. From research-grade cell culture supplement to pharmaceutical excipient grade for ATMP and vaccine formulation. All products on request — contact us for availability, documentation and pricing.

Excipient GradeDiagnostic GradeCell Culture GradeResearch Grade5% · 20% · 25%US Origin · All on Request
All HSA products are available on request. Contact info@seamlessbio.de with your grade, format, volume and documentation requirements — we will respond within 48 hours.

HSA by Grade

Human Serum Albumin is not a single product — it is a category spanning four grades with different quality systems, regulatory status and documentation packages. Choosing the wrong grade introduces regulatory risk. See our HSA vs. rHSA Grade Comparison for a complete guide.

Excipient Grade

HSA Excipient Grade

Plasma-derived HSA for use as an inactive ingredient (excipient) in pharmaceutical and biopharmaceutical formulations. Meets pharmacopoeial requirements (Ph. Eur./USP). Standard grade for vaccine formulation, stabilisation of therapeutic proteins and drug delivery applications.

  • Plasma-derived from human donors
  • Pharmacopoeial (Ph. Eur./USP) compliant
  • Viral inactivation step included
  • For use in pharmaceutical products
  • Requires customer qualification and appropriate licensure
Request — All on Request
Diagnostic Grade

HSA Diagnostic Grade

High-purity HSA specifically processed for use in IVD diagnostic applications — calibrator and control manufacturing, quality control products and immunoassay reagent stabilisation. Exceptional purity and lot-to-lot consistency for diagnostic test kit development and production.

  • Exceptional purity — minimal interfering proteins
  • Defined lot-to-lot consistency
  • Suitable for calibrator and control manufacturing
  • IVDR documentation available
  • Batch reservation for IVD product lifecycles
Request — All on Request
Cell Culture Grade

HSA Cell Culture Grade

Human-derived albumin for xeno-free cell culture supplementation, ATMP manufacturing and cryopreservation. Eliminates xenogenic bovine albumin (BSA) exposure for human cell lines where xeno-free compliance is required. Standard for CAR-T cell wash buffers, MSC expansion and iPSC serum-free formulations.

  • Human-derived — no bovine origin
  • Xeno-free cell culture compliance
  • Cell therapy and ATMP manufacturing
  • Cryopreservation buffer supplement
  • ISO 13485 or Near-GMP quality system
Request — All on Request
Research Grade

HSA Research Grade

Cost-effective human albumin for research and development applications where pharmaceutical-grade documentation is not required. Serum-free media development, assay buffer formulation, blocking reagent and basic research applications. CoA per lot included.

  • Research and development use
  • CoA per lot
  • Cost-effective for high-volume R&D
  • Assay buffer and blocking applications
  • Available from shop or on request
Available in Shop

HSA Liquid Solutions

Pre-formulated HSA solutions in isotonic or concentrated formats — ready-to-use for cell culture washing, cell therapy processing and biopharmaceutical formulation.

HSA 5% Solution (50 g/L)

Isotonic — equivalent to physiological plasma albumin concentration. Standard for cell washing, separation buffers and isotonic cell therapy formulations. Available in PET/PETG vials and single-use bags.

pH 6.7–7.3 · ≥96% purity · ≤5 EU/mL · 0.2 µm sterile filtered · ISO 13485
On Request →

HSA 20% Solution (200 g/L)

Concentrated solution — used where volume minimisation is critical. Final product formulation for cell therapy infusion preparations, where dilution to physiological concentration occurs at the point of use. PET/PETG vials and single-use bags.

pH 6.7–7.5 · ≥96% purity · ≤5 EU/mL · 0.2 µm sterile filtered · ISO 13485
On Request →

HSA 25% Solution (250 g/L)

Hyper-concentrated solution for cryopreservation formulations, albumin spiking in defined cell culture media and volume-critical formulation development. Requires dilution for most cell culture applications.

pH 6.7–7.5 · ≥96% purity · 0.2 µm sterile filtered · ISO 13485
Available in Shop →

Packaging Formats

Lyophilised Powder

Powder form for maximum stability and shelf life at ambient storage. Reconstitute to required concentration. Standard format for research and diagnostic grade HSA.

Volumes: 1 g, 5 g, 10 g, 100 g · Bulk on request

PET/PETG Vials

Break-resistant, lightweight, albumin-compatible plastic vials for HSA liquid solutions. Cost-effective alternative to glass for research and process development use.

Volumes: 10 mL – 500 mL · On request

Single-Use Bags

Closed-system single-use bags — GMP-compatible, no cross-contamination risk. Preferred for cell therapy manufacturing, GMP-adjacent processes and large-volume applications.

Volumes: 250 mL – 5 L · On request

All HSA Products — On Request

Contact us with your grade, format, volume and documentation requirements. Free test volumes available. Response within 48 hours.

Need a Lot Reservation or Test Sample?

Reserve your validated FBS or human serum lot — no prepayment.
Free test samples on request.

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