These technologies, while requiring the synthesis of a DNA antibody conjugate, have shown impressive limits of detection and multiplexing capacity, though it is worth pointing out that antibody cross-reactivity typically limits multiplexing to ≤20 protein targets within a single sample volume.
Furthermore, the AuNPs-anchored BDMT-modified graphene (AuNPs/BDMT/G) electrode is explored for highly sensitive electrochemical detection of H2O2, exhibiting an impressive detection limit of 1.8 μM (signal-to-noise ratio of 3).
They have reported the first detection of SNPs directly from clinical samples without the need of DNA pre-amplification with an impressive detection limit of 3 zeptomolar.
A sandwich-hybridization assay for the ultrasensitive detection of DNA using sub-50 NaYF4 Yb3+/Er3+r3+ UCNPs has been attempted by Li et al., displaying an impressive detection limit of 10 nM without polymerase chain reaction (PCR) amplification.
The incorporation of numerous such catalytic units thereby greatly enhanced the chemiluminescence signal in the presence of luminol and H2O2, leading to an impressive detection limit of 71 aM for the target SNP.
The authors found that this assay was extremely sensitive, capable to detecting PSA down to the sub-aM level with an extremely impressive detection limit (DL) of 1.5 × 10 20 M and a linear dynamic range of ∼3 orders of magnitude.
After acid dissolution of the QDs, the resulting Cd2+ ions were detected by HG-AFS, giving a highly impressive detection limit of 0.8 aM for the target DNA and a dynamic range of 3 orders of magnitude (from 1 aM to 1 fM).
With the integration of the PG-RCA reaction and nicking enzyme-driven recycling amplification, this QD-based miRNA nanosensor exhibited an impressive detection limit of 50.9 aM and a large dynamic range of 7 orders of magnitude from 0.1 fM to 1 nM for the specific microRNA target.
INSIDE PITCH ROGER CLEMENS was impressive in limiting the Phillies to one run on four hits over four innings Friday.
