Practical guides for laboratory buyers
Short, referenced guides on biomarkers, recombinant-protein formats and supplier qualification — written for research groups and assay developers rather than for search engines.
ST2 (sST2): A Practical Guide for Researchers
What soluble ST2 is, how it signals cardiac stress via the IL-33 axis, and how research groups use recombinant sST2 in assay development and immunology.
Read →How to Qualify a Recombinant Protein Supplier for Your Lab
Purity by HPLC/SDS-PAGE, endotoxin, lot-to-lot consistency, CoA and cold-chain shipping — the checklist university labs should run before reordering.
Read →Cardiac Biomarker Panels: ST2, Troponin and D-dimer
How the three work together in cardiovascular research and diagnostics, and why raw-material quality decides assay reliability.
Read →Recombinant Protein Formats: Tagged, Carrier-free or Lyophilised?
How the format of a recombinant protein affects which experiments it can support — and what to specify when you order.
Read →Lot-to-Lot Consistency in IVD Raw Materials
Why a silent change between batches is the most expensive failure mode in assay development — and how to protect against it.
Read →Reconstituting Lyophilised Proteins: A Practical Bench Protocol
A short, practical protocol for bringing lyophilised proteins back into solution without losing activity.
Read →sST2 vs NT-proBNP: Which Cardiac Marker for Which Question
Two cardiac markers that answer different questions — and why the choice changes what you should look for in the reagent.
Read →Setting Up an sST2 Immunoassay: Antigen, Antibody Pairs and Calibrators
A practical sequence for groups building an sST2 assay for the first time, from antigen format through to curve stability.
Read →Choosing a Biological Buffer: Tris, HEPES and MES Compared
How the buffer you pick changes enzyme activity, metal-ion availability and assay reproducibility — and how to choose deliberately.
Read →Endotoxin in Recombinant Proteins: Why It Decides Your Cell-Based Assay
Endotoxin is invisible in a purity figure and decisive in a live-cell experiment. Here is what it is, where it comes from and when to specify it.
Read →The IL-33/ST2 Axis: A Short Primer for Immunology Groups
How one receptor and its soluble decoy shape the IL-33 signal, and what that means for the reagent you choose.
Read →Cold-Chain Shipping for Recombinant Proteins: What Actually Happens in Transit
What is actually temperature-sensitive, which documents customs will ask for, and how to avoid the two failures that waste a shipment.
Read →sST2 in the Literature: A Starting Reading List
A short reading list for groups entering sST2 work — and why we publish a reading list rather than a citation count.
Read →How to Read a Certificate of Analysis for a Recombinant Protein
Lot number, methods and reported results: what each part of a recombinant protein Certificate of Analysis tells a laboratory buyer.
Read →When Calibrators Require Carrier-Free Antigen
Carrier proteins and excipients can shift a calibration curve. Here is when a carrier-free antigen is the correct choice for assay calibrators.
Read →LAL Endotoxin Testing Explained: Methods, Units and Release Limits
Why two endotoxin results quoted in the same unit can mean different things, and what to ask about the LAL method behind a release figure.
Read →HPLC and SDS-PAGE Purity: Which Number Should You Trust?
HPLC and SDS-PAGE measure different properties. Understanding what each purity figure captures helps developers compare recombinant proteins fairly.
Read →Choosing a cTnI Antigen for Assay Development
Antigen source, form and stability shape the calibration curve in cardiac troponin I immunoassays. Practical points for assay developers.
Read →NT-proBNP Calibrator Material: Glycosylation and Matrix Effects
Glycosylation state and matrix composition affect NT-proBNP immunoassays. What assay developers should control when sourcing calibrator material.
Read →BNP vs NT-proBNP: A Developer's View of Two Natriuretic Peptide Analytes
BNP and NT-proBNP differ in origin, stability and clearance. Those analytical differences shape antibody choice, format and sample handling.
Read →Choosing an Inflammation Marker: hs-CRP, PCT and IL-6
hs-CRP, procalcitonin and interleukin-6 report different aspects of the inflammatory response. A guide to selecting the right analyte.
Read →Sourcing IVD Raw Materials Without a GMP Certificate
Not every supplier holds GMP. These are the questions that separate a capable raw-material supplier from one whose paperwork will not hold up.
Read →A Practical Workflow for Antigen-Antibody Pair Screening
A structured workflow for screening antibody pairs against a recombinant antigen, from coating controls to sandwich confirmation in the intended matrix.
Read →Tumor Marker Antigens for Immunoassays: CEA, AFP, CA125 and CA19-9
Selecting antigen material for CEA, AFP, CA125 and CA19-9 immunoassays: what differs between these tumor markers at the bench.
Read →Importing IVD Raw Materials into the EU and US: Documents to Prepare
A practical checklist of documentation for importing IVD raw materials into the EU and US, from the commercial invoice to the certificate of origin.
Read →Technical support & protocols
Reconstitution, buffer selection, endotoxin and cold chain — the practical side of working with these materials, plus a direct route to ask a question.
Go to technical support →Request a Quote or Sample
Tell us your application, target purity and quantity — we reply within one business day.