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  17th - 19th May
cDNA-PCR Sequencing Kit

Identification and quantification of full-length transcripts with highest output.

This uses our Kit 11 chemistry

  • Products from Oxford Nanopore Technologies that have completed their Early Access
  • Users can continue to provide feedback through feature request pinboard
  • Warranty periods extended to 1 – 3 months
  • Product continues to iterate with upgrade notifications of up to 3 months
  • Lead time visible in store
  • Product subject to availability


This kit is recommended for users who:

  • have a limited amount of input material
  • want to optimise their sequencing experiment for output
  • would like to identify and quantify full-length transcripts are interested in differential gene expression
  • want to characterise and quantify isoforms, splice variants and fusion transcripts

Please note that to use this kit, you will need to purchase additional 3rd party reagents: see the "3rd Party Materials" tab for more detail.

The cDNA-PCR Sequencing Kit features:

Preparation time~210 mins + PCR
Input requirement4 ng poly(A)+ RNA, or 200 ng total RNA
RT RequiredYes
PCR requiredYes
Read lengthEnriched for full-length cDNA during PCR
Kit chemistryKit 11
Associated protocolsPCR-cDNA Sequencing (SQK-PCS111)
Single-cell transcriptomics with cDNA prepared using 10X Genomics
Multiplexing optionsFlow Cell Wash Kit (EXP-WSH004)
Pack size6 reactions
StabilityShipped at 2–8°C

Long-term storage -20°C

Oxford Nanopore Technologies deem the useful life of the product to be 3 months from receipt by the customer

The PCR-cDNA Sequencing Kit is used to prepare cDNA for nanopore sequencing from an input of as low as 4 ng poly-A+ RNA. Users who do not have poly-A+ enriched RNA can use 200 ng of total RNA but additional optimisation may be required.

The protocol uses a strand switching method to select for full length transcripts, allowing the identification of splice variants, with the incorporation of unique molecular identifiers (UMI) during this step. Taking full-length poly-A+ RNA, complementary strand synthesis and strand switching are performed using kit-supplied oligonucleotides. Double-stranded cDNA is then generated by PCR amplification using primers that contain 5’ tags which facilitate the ligase-free attachment of Rapid Sequencing Adapters.

This cDNA kit (Kit 11) includes the Rapid Adapter T (RAP T), with two key features: Firstly, the adapter is higher capture, enabling lower flow cell loading amounts. Secondly, the adapter contains the fuel fix technology, enabling users to run long experiments without the need for fuel addition during the run.

The PCR-cDNA Sequencing Kit also includes a new cDNA RT adapter and RT primer to prime cDNA synthesis from the end of a transcript to reduce overlaps during the reverse transcription step and to allow users to measure polyA+ tail lengths.

Shipping and logistics:

Flow cells and kits are shipped together in an environmentally friendly temperature-controlled shipping box.

Products are shipped to customers within the USA and EU Monday to Thursday. Shipments to Canada, Norway, Korea and Japan are expedited Monday to Wednesday; with Australia and New Zealand leaving our warehouses on a Friday. Shipments to the rest of the world are made on Mondays to allow the full working week for packages to arrive.

The delivery charges are calculated when a quote is raised or during checkout. Once an order is made, the delivery ID and delivery information can be tracked in the Store.


Taking full-length poly(A)+ RNA, complementary strand synthesis and strand switching are performed using kit-supplied oligonucleotides. Double-stranded cDNA is then generated by PCR amplification using primers that contain 5’ tags which facilitate the ligase-free attachment of Rapid Sequencing Adapters.

PCS111 v2 workflow


PCR-cDNA Sequencing (SQK-PCS111)

To access the protocol, you will need to register for a Nanopore Community account.

What's in the box

The cDNA-PCR Sequencing Kit (SQK-PCS111) kit contains enough reagents for six reactions:

SQK-PCS111 1

NameAcronymCap colourNo. of vialsFill volume per vial (µl)
Strand Switching Primer IISSPIIViolet120
RT PrimerRTPYellow110
cDNA RT AdapterCRTAAmber110
Rapid Adapter TRAP TGreen110
Annealing BufferABOrange110
cDNA PrimercPRMWhite cap, grey label140
Elution BufferEBBlack1500
Short Fragment BufferSFBClear11,800
Sequencing Buffer IISBIIRed1500
Loading Beads IILBIIPink1360
Loading SolutionLSWhite cap, pink label1400
Flush BufferFBBlue61,170
Flush TetherFLTWhite cap, purple label1200

3rd party materials


  • Agencourt RNAClean XP beads
  • Agencourt AMPure XP beads
  • Lambda Exonuclease (NEB, cat # M0262L)
  • NEBNext® Quick Ligation Reaction Buffer (NEB B6058)
  • T4 DNA Ligase 2M U/ml (NEB M0202)
  • 10 mM dNTP solution (e.g. NEB N0447)
  • LongAmp Hot Start Taq 2X Master Mix (NEB, M0533S)
  • Maxima H Minus Reverse Transcriptase (200 U/µl) with 5x RT Buffer (ThermoFisher, cat # EP0751)
  • RNaseOUT™, 40 U/μl (Life Technologies, 10777019)
  • USER (Uracil-Specific Excision Reagent) Enzyme (NEB, cat # M5505L)
  • Exonuclease I (NEB, M0293)
  • Nuclease-free water (e.g. ThermoFisher, cat # AM9937)
  • Freshly prepared 70% ethanol in nuclease-free water
  • 1.5 ml Eppendorf DNA LoBind tubes
  • 0.2 ml thin-walled PCR tubes
  • Qubit RNA HS Assay Kit (ThermoFisher Q32852)
  • Qubit dsDNA HS Assay Kit (ThermoFisher Q32851)
  • Qubit™ Assay Tubes (ThermoFisher Q32856)


  • Hula mixer (gentle rotator mixer)
  • Magnetic separator, suitable for 1.5 ml Eppendorf tubes
  • Microfuge
  • Vortex mixer
  • Thermal cycler
  • P1000 pipette and tips
  • P200 pipette and tips
  • P100 pipette and tips
  • P20 pipette and tips
  • P10 pipette and tips
  • P2 pipette and tips
  • Ice bucket with ice
  • Timer
  • Qubit fluorometer (or equivalent for QC check)
  • Multichannel pipette capable of 20-200 μl


The cDNA-PCR Sequencing Kit can be used together with:


  • Flow Cell Wash Kit (EXP-WSH004)
  • Sequencing Auxiliary Vials (EXP-AUX002)
  • RNA Control Expansion (EXP-RCS001)

Flow cells

  • FLO-MIN106D
  • FLO-PRO002


  • MinION Mk1C
  • MinION Mk1B
  • GridION
  • PromethION