Simple Plex Ultra-Sensitive Assays for Low-Abundance Biomarkers

Setting a New Gold Standard in Neuro Biomarker Detection

Related Assays | Resources 

What are Simple Plex Ultra-Sensitive Assays?

From discovery to clinical research, Simple Plex Ultra-Sensitive Assays simplify biomarker detection while delivering robust, reproducible measurement of low abundant proteins. This advancement enables reliable detection and precise quantification of endogenous biomarkers in plasma and serum samples —without added complexity.

  • Ultra sensitivity – Measure biomarkers at endogenous levels with confidence, enabling earlier insights and more precise decision-making.
  • Built-in standard curves  – Save time and reduce errors with automated standard curves, ensuring consistent, reproducible results across every run.
  • Validated for key sample types  – Get reliable results from the most commonly used sample types including CSF, serum, and plasma so you can focus on discovery without worrying about compatibility or validation.
  • Fast results in 2:50 hours – Get actionable data quickly, accelerating your research timelines and improving productivity without sacrificing accuracy. 
Neurodegeneration biomarkers, GFAP, NFL, pTau217 and Amyloid Beta detected with Simple Plex Ultra-Sensitive Assays

High detectability of neurodegeneration biomarkers in healthy plasma, at ultra-low concentrations. Neurodegenerative biomarkers were quantified in plasma samples from healthy donors (age 55+), using the Simple Plex Ultra-Sensitive Assay. The results indicate full detectability and near complete quantifiability of all samples across all assays.

Simple Plex Ultra-Sensitive Assay Technology

How it Works  

  • Sample is routed through a microfluidic circuitry, with synchronized release of assay reagents.  
  • Sandwich immunoassay occurs within Glass Nano Reactors (GNRs). 

Achieving ultra-sensitive detection

  • Assay parameters and microfluidic protocols were systematically optimized to achieve femtogram-level sensitivity.  
  • The platform’s high precision minimizes variability at the low end of the standard curve, enabling more reliable quantification of low abundance analytes.
Simple Plex cartridge illustration

Simple Plex Assays Comparison

 Simple Plex Discovery AssaysSimple Plex Assays Simple Plex Ultra-Sensitive Assays 
 Early Research TestingHighly Validated KitsHighly validated kits for ultra-sensitive detection 
Recommended WhenLess stringent assay specifications for discovery and early researchPrecise and accurate results with tight performance specifications for regulated environmentsSensitive and accurate results for detection of low-abundant proteins at healthy endogenous levels
Sensitivitysub pg/mlsub pg/mlfg/ml
Assay Run Time75 min75 min155 min
Required Sample Volume≤25 µL≤25 µL≤40 µL
Species (currently available)Human, Mouse, RatHuman, Mouse, Rat, Non-Human PrimateHuman
MultiplexUp to 8Up to 8Up to 4 (limited by available analytes)
Precision 

Intra-assay: ≤12% 
Inter-assay: ≤12% 

Verified across 2 manufactured lots

Intra-assay: ≤10% 
Inter-assay: ≤12% 

Validated across 3+ manufactured lots. Extensively tested throughout manufacture and validated to ensure long-term consistency

Intra-assay: ≤10% 
Inter-assay: ≤12% 

Validated across 3+ manufactured lots. Extensively tested throughout manufacture and validated to ensure long-term consistency

LinearityRange 75-125%  
Verified across 2 manufactured lots
Range 80-120% 
Validated across 3+ manufactured lots 
Range 70-130% 
Validated across 3+ manufactured lots 
RecoveryRange 75-125% 
Verified across 2 manufactured lots
Range 80-120% 
Validated across 3+ manufactured lots 
Range 70-130% 
Validated across 3+ manufactured lots 
Assay ValidationVerified with recombinant proteinsVerified recombinant proteins and natural samplesVerified recombinant proteins and natural samples

Resources

Ultra Sensitive Detection With Simple Plex Assays App Note Thumbnail

Precise & Ultra-Sensitive Detection of NFL, GFAP, pTau217, & Amyloid Beta (1-42)

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