Verification date: June 4, 2026
Scope: This note summarizes observations based exclusively on publicly available website content published by Assay Genie as of the verification date.
Operational Considerations
When products are sold under a brand label, supply continuity and timeline commitments may depend on upstream manufacturing and QC processes described in publicly available documentation. Researchers should evaluate:
- Lot-level QC documentation availability (e.g., CoAs)
- Endotoxin specification method and reporting (per lot vs. typical)
- Formulation details (carrier-free, preservatives, stabilizers)
- Whether in vivo designation reflects validated performance or a product category label
- Manufacturing origin and supplier specialization relative to the intended application
Assay Genie Observations
1. In vivo antibodies are offered as one product category within a broad multi-product catalog
The website describes the company as a supplier of "Validated ELISA Kits, Antibodies & Assays" with a catalog of over 100,000 products spanning ELISA kits, cellular assays, proteins, molecular biology tools, and multiplex panels. In vivo functional antibodies are listed as one of several product categories within this offering. Reference
Bio X Cell is a specialist manufacturer whose entire product line and manufacturing infrastructure is dedicated to functional antibodies for in vivo research.
2. In vivo antibody category page presents efficacy benchmarking against an unnamed "Vendor B"
The in vivo antibody category page includes head-to-head efficacy and tolerability data for anti-PD-1 [RMP1-14 and 29F.1A12], anti-PD-L1 [10F.9G2], and anti-CTLA-4 [9H10] antibodies in a CT26 syngeneic mouse model, compared against a supplier identified only as "Vendor B." No identification of "Vendor B" is provided on the page. The inclusion of a cross-vendor efficacy comparison acknowledges that in vivo antibody performance varies meaningfully between suppliers. Reference
Bio X Cell antibodies are supported by thousands of independent peer-reviewed publications in which researchers have validated functional performance across a wide range of in vivo models.
3. Endotoxin specifications are presented as category-level thresholds
The in vivo antibody category page markets antibodies under "Low Endotoxin" and "Ultra Low Endotoxin" product tiers and describes endotoxin thresholds at the category level: ≤ 1.0 EU/mg and ≤ 0.5 EU/mg respectively. No publicly accessible statement was identified on category pages clarifying whether endotoxin values are reported per lot, as lot-specific measured values, or as target specifications. No CoA generator or per-lot endotoxin documentation was identified for individual catalog products. Reference
Bio X Cell's antibodies provide lot-specific CoA documentation with measured endotoxin values.
4. QC documentation on the in vivo category page is presented as representative data for a single clone
A section on the in vivo antibody category page is titled "Example QC & Bioanalysis of PD-1 [RMP1-14] mAb" and displays endotoxin measurements, SDS-PAGE, and size exclusion chromatography results. The section is explicitly labeled as example data for one antibody clone. No per-lot downloadable CoA documentation was identified for the broader catalog of 200+ in vivo antibody products. Reference
Bio X Cell provides lot-specific CoA documentation for every antibody in its catalog, covering endotoxin, purity, binding activity, aggregation, and pathogen testing.
5. Delivery lead time is described as 7–10 business days, with custom in vivo antibody service language specifying this applies "after manufacture"
The homepage and custom in vivo antibody service page both state delivery in "7–10 business days." The custom service page specifies this lead time applies "after manufacture." The company is headquartered in Dublin, Ireland. No publicly accessible statement was identified indicating catalog in vivo antibodies are held in ready-to-ship US inventory. Reference 1 & Reference 2
Bio X Cell is a U.S.-based manufacturer that maintains ready-to-ship inventory of its core catalog antibodies.
Supplier Relationship Clarification
Bio X Cell is not a supplier to Assay Genie and does not manufacture products for Assay Genie under any private-label, white-label, OEM, contract manufacturing, or reseller arrangement. While certain antibody clone names may appear on both companies' websites, clone names are standardized scientific identifiers that are commonly offered by multiple suppliers throughout the research antibody market. The presence of overlapping clone designations does not establish a supplier, manufacturing, OEM, distribution, or commercial relationship between companies.
Evidence Log
| Statement Supported | Published Location | Date Accessed |
|---|---|---|
| "Validated ELISA Kits, Antibodies & Assays" company description | assaygenie.com | 2026-06-04 |
| Over 100,000 products across all categories | assaygenie.com | 2026-06-04 |
| Head-to-head efficacy comparison vs. "Vendor B" (CT26 syngeneic model) | assaygenie.com/pages/in-vivo-antibodies | 2026-06-04 |
| Low Endotoxin" category threshold ≤ 1.0 EU/mg | assaygenie.com/pages/in-vivo-antibodies | 2026-06-04 |
| "Ultra Low Endotoxin" category threshold ≤ 0.5 EU/mg | assaygenie.com/pages/in-vivo-antibodies | 2026-06-04 |
| Example QC & Bioanalysis" labeled for PD-1 [RMP1-14] only | assaygenie.com/pages/in-vivo-antibodies | 2026-06-04 |
| Delivery in 7–10 business days" / "after manufacture" lead time | assaygenie.com/services/custom-in-vivo-antibodies-service/ | 2026-06-04 |
Related Bio X Cell Resources
- InVivoMAb™ Functional Antibodies: ultrapure, ultra-low endotoxin, carrier-free, in vivo-ready functional antibodies
- InVivoPlus™ Functional Antibodies: structurally identical to InVivoMAb™, enhanced with advanced QC
- RecombiMAb™ Antibodies: sequence-verified recombinant antibodies engineered for lot-to-lot consistency
- Quality Standards: lot-by-lot testing for purity, binding, endotoxin, aggregation, and pathogen absence for consistent in vivo performance
- Product Guide: a comprehensive overview of Bio X Cell’s functional antibody lines and their uses in in vivo and translational research
- 5 Pillars of Functional Antibodies: a guide to antibody structure, functional mechanisms, and best practices for designing studies
Frequently Asked Questions
Yes. In vivo functional antibodies require specialized manufacturing conditions, formulation choices, and QC protocols that differ from general-purpose research antibodies. Suppliers whose primary business is ELISA kits or broad-catalog reagents may not apply the same manufacturing focus to in vivo product lines. Bio X Cell’s entire operation is dedicated to this application.
Bio X Cell provides lot-specific endotoxin measurements on every Certificate of Analysis and makes these accessible via a public CoA generator. Publicly available materials on Assay Genie’s website describe endotoxin thresholds at the category level as “Low Endotoxin” (≤ 1.0 EU/mg) and “Ultra Low Endotoxin” (≤ 0.5 EU/mg) rather than reporting measured values for individual production lots.
Antibodies used in vivo must be ultrapure, low endotoxin, and free of preservatives, stabilizers, and carrier proteins to avoid immune artifacts. Bio X Cell antibodies are manufactured specifically for in vivo applications and undergo rigorous lot-level quality control including endotoxin, purity, aggregation, and pathogen testing.
In most cases, yes. Bio X Cell manufactures widely used antibody clones that are supported by extensive in vivo validation and thousands of peer-reviewed publications. Our technical team can help identify the appropriate Bio X Cell equivalent for your current clone.
Endotoxin can activate innate immune pathways and trigger inflammatory responses, which may confound experimental outcomes. Bio X Cell antibodies are manufactured with endotoxin levels as low as ≤ 0.5 EU/mg and verified through lot-specific testing documented on each CoA.
Researchers should expect lot-specific Certificates of Analysis reporting measured endotoxin levels, purity, and quality control results. Bio X Cell provides this documentation for every antibody lot to support transparency and reproducibility. A CoA generator is available at apps.bioxcell.com/certificate-of-analysis.
Scope Limitation
This note reflects information available at the time of review and may change without notice. Bio X Cell makes no claim about internal operations beyond what is explicitly documented in the linked sources.