MERCURIUS™

Low-Input FLASH-seq Service
for high-sensitivity RNA-seq

This service enables full-length mRNA transcript coverage from low RNA inputs from precious samples (1pg to 1ng).

Discover Sample Datasets

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Ultra-sensitive
RNA-seq

Full-length transcript coverage

Discriminates rare cells in heterogeneous samples

About the service

The MERCURIUS™ Low-input FLASH-seq service offers the most sensitive, full-length mRNA and cost-effective solution even for low-abundance genes, empowering researchers to explore differential gene expression, detect alternative splicing, and analyze isoform diversity, all critical for understanding complex biology, especially in rare cell populations.

This service is dedicated to low RNA input from precious samples (1 pg to 1 ng), subcellular inputs, liquid biopsies, exosomes, microbiopsies, small organoids, and early embryos.

As part of the FLASH-seq service, clients simply need to ship the frozen plates with the samples to our service centers located in Switzerland and the United States.

 
Our FLASH-seq team will then process the plates and return results in as little as four weeks.

As a result of our service, our clients receive raw sequencing data (fastq files), gene count matrices, and analysis report files.

of extracted RNA
From 5 pg
genes detected
at 0.5M reads/sample
0 +
library prep workflow
Down to 0 day
1

1. Alithea ships the plate(s)

To preserve sample quality, plates must be placed between dry ice—not just on top. Inadequate cooling may compromise RNA integrity!

Sample submission form

2

2. MERCURIUS™ Low-Input FLASH-seq​ library prep

2 days

3

3. Library QC- Client Checkpoint

(Qubit, Fragment analyzer, shallow sequencing)

1 week

4

4. Deep Sequencing on AVITI or Illumina, depending on the request by the client

1 week

5

5. Data analysis and reporting- Client Checkpoint

6

6. Data Delivery

Raw FASTQ files, sample report file, QC files, and gene count tables

MERCURIUS™ FLASH-seq Detects More Genes Than Smart-seq3 and Smart-seq2 with Greater Consistency

FLASH-seq detects a median of approximately 11,000 genes per sample in HEK293T cells, outperforming Smart-seq3 and Smart-seq2 after downsampling all to 500k reads/sample.

The Sensitivity Of MERCURIUS™ FLASH-Seq Is Retained Even In Highly Heterogeneous Populations​

Number of genes detected in human PBMCs, processed with different protocols, and the number of reads downsampled to 125,000 raw reads. 

MERCURIUS™ FLASH-Seq Is A Full-Length ScRNA-Seq Protocol

Gene body coverage shows a uniform read distribution across the entire gene body for the FLASH-seq protocol.

MERCURIUS™ FLASH-Seq Shows High Sensitivity For Low Sample Inputs

The number of genes detected in HEK 293T cells using different RNA inputs (from 2.5 pg to 250 pg) at different sequencing depths.

Example of report

FLASH-seq sample report

Publications

2025
Tarek Elmzzahi, Chun-Hsi Su, Mehrnoush Hadaddzadeh Shakiba, Doaa Hamada, DaryaMalko, Maren Koehne, Aleksej Frolov, Teisha Mason, Yuanfang Li, Rebekka Scholz, Collins Osei-Sarpong, Leonie Heyden, Jonas Schulte-Schrepping, Lorenzo Bonaguro, Kristian Haendler, Vassiliki Boussiotis, Annett Halle, Elena De Domenico, Daniel HDGray, Martin Fuhrmann, Zeinab Abdullah, Axel Kallies, Kevin Man, Marc D. Beyer.
2025
Akisawa Satomi, Riho Saito, Tadahaya Mizuno, Hiroki Sugishita, Hideki Ukai, Shigeyuki Shichino, Masashi Yanagisawa, Kouji Matsushima, Yukiko Gotoh, Tomohiko Okazaki.
2022
Hahaut, V., Pavlinic, D., Carbone, W et al.,

Sample Datasets

Hap1

Number of samples:
24
Reads per sample in demo dataset:
10'000 reads

To have access to the deep-sequenced dataset (7.3 M reads per sample) contact us.

Demo dataset file size:
13.3 MB

HepG2

Number of samples:
65
Reads per sample in demo dataset:
10'000 reads
To have access to the deep-sequenced dataset (3.9 M reads per sample) contact us.
Demo dataset file size:
4.76 MB

HeLa

Number of samples:
24
Reads per sample in demo dataset:
10'000 reads

To have access to the deep-sequenced dataset (7.1 M reads per sample) contact us.

Demo dataset file size:
13.6 MB
MERCURIUS™ Low-Input FLASH-seq is a plate-based, full-length, single-cell RNA-seq method that captures polyadenylated mRNA transcripts in ultra-low-input RNA samples. It provides detailed information on transcript isoform usage, structure, and alternative splicing.
 
Its ability to capture full-length mRNA transcripts and detect low-abundance genes makes it a powerful tool for detecting rare cell types.
 

The FLASH-seq protocol was designed to enhance both the sensitivity and efficiency of single-cell mRNA sequencing compared to other plate-based methods, like Smart-seq2.

Read more about the technology in our blog posts: here and here

We have significantly enhanced the original FLASH-seq method to offer a streamlined workflow and superior data output. This plate-based technology (available in 96- and 384-well formats) features a novel, non-toxic tagmentation buffer and delivers ultra-sensitive gene detection, capturing up to two times more genes compared to other commercially available solutions.

The MERCURIUS™ Low-Input FLASH-seq protocol is designed for low RNA input from precious samples (1 pg to 1 ng), subcellular inputs, liquid biopsies, exosomes, microbiopsies, small organoids, and early embryos.

You are required to extract RNA from the samples and normalize them to the same concentration prior to freezing and shipping.

Please note! To preserve sample quality during shipping, plates must be placed between dry ice—not just on top. Inadequate cooling may compromise RNA integrity!

From the moment we receive the frozen plates until the moment we deliver the sequencing data, we typically estimate four weeks. 

Ask your question:

Getting started with our MERCURIUS™ Low-Input FLASH-seq services is simple

You can either book a call with our experts to discuss your project or submit your experimental details via our contact form so we can review your design and requirements. 

Based on the goals, sample types, and scale of your study, we may recommend starting with a pilot project to optimise conditions and de-risk a larger screen. 

If you’re interested in implementing the technology in your own lab instead, you can explore our MERCURIUS™ Low-Input FLASH-seq kits on the dedicated kits page.

Related Blog Posts

August 27, 2025

Single-cell RNA sequencing (scRNA-seq) has revolutionized our ability to examine the cellular heterogeneity of complex samples, identify new cell types, and explore transcriptional regulation at…

July 28, 2025

The Smart-seq2 protocol was the gold standard for full-length plate-based single-cell RNA-seq, offering superior sensitivity and the transcript coverage necessary to detect splice isoforms, allelic…

November 5, 2024

Revolutionizing Single-Cell RNA Sequencing with FLASH-seq The field of genomics is advancing rapidly, and one of the most transformative tools has been single-cell RNA sequencing…

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