Featured Products

HighPrep™ PCR Clean-up System

Magnetic beads based reagent for manual and automated post-PCR and post-enzymatic reaction clean-up, for NGS library clean-up and reliable amplicon size selection.

Read More

HighPrep™ Viral DNA/RNA Kit

Magnetic bead based kit optimized for extraction of RNA from a variety of viral samples - Swabs, whole blood, serum, plasma, saliva & other body fluids.

Read More

MagQuant™ Plus DNA Kit

Magnetic beads based kit for normalization of DNA concentration, and quantitation of DNA for NGS and other applications

Read More

HighPrep™ Total RNA Plus Kit

Magnetic bead-based kit designed to extract high-quality total RNA from mammalian tissues and cultured cells.

Read More

MagBio offers free samples of all kits & reagents for testing so that you can validate our products and ensure they suit your workflow before committing to any purchases.

Click on the link below or give us a call at (301) 302-0144 to request your free sample today!

Request A Sample Kit

Upcoming Meetings

Don't Miss Out

Sign up for our latest news and offers

cfKapture™ 21 Kit

Magnetic bead-based DNA extraction kit designed to isolate circulating cell free DNA (cfDNA) from human plasma and serum.

Grouped product items
Cat.# Product Name Price Qty
CFK-D50-400UL cfKapture™ 21 Kit (200-400µL) 50 preps
CFK-D50-2ML cfKapture™ 21 Kit (1-2 mL) 50 preps
CFK-D50-5ML cfKapture™ 21 Kit (3-5 mL) 50 preps

cfDNA (ccfDNA) stabilization and extraction for:

  • Liquid biopsy research
  • NIPT genomic research
  • Cancer genomic research
  • Transplant monitoring


  • Ideal system for plasma processing in high-throughput setting
  • Allows plasma sample storage at room temperature for 21 days before processing
  • No carrier RNA, low sample volume
  • Efficient isolation of nucleic acids, with high input and low elution volumes
  • No organic extraction or ethanol precipitation

The cfKapture™ 21 kit is a magnetic bead-based DNA extraction kit designed to isolate circulating cell free DNA (cfDNA) from human plasma and serum. The cfKapture™ 21 kit is uniquely equipped with a plasma stabilization buffer; SE buffer allows plasma sample to be stabilized during storage or transport for up to 21 days at room temperature when mixed with plasma sample. This functionality offers processing laboratories time flexibility for optimizing their operational efficiency as well as outreach for receiving samples at local and international levels. The isolated cfDNA can be directly used for real time-PCR and DNA library preparation suitable for next generation sequencing.

  • cfKapture™ 21 Kit process overview

cfKapture 21 Kit Process overview

 This is a short overview of the protocol, for detailed protocols, please refer to PRODUCT DOCUMENTS
  1. Transfer plasma to a conical tube.
  2. Add Pro K Solution
  3. Add CFL Buffer
  4. Add 100% ethanol and MAG-CFB Particles
  5. Wash by adding CFW1 Buffer
  6. Wash by adding CFW2 Buffer
  7. Elution done by using Elution Buffer
  8. Store DNA at -20°C.
Kit Components
  • CFL Buffer
  • SE Buffer
  • CFW1 Buffer
  • CFW2 Buffer
  • Elution Buffer
  • DF Solution
  • Pro K Solution
  • MAG-CFB Particles

Store MAG-CFB Particles, Pro K Solution, DF Solution at 2-8°C | DO NOT FREEZE. Store all other components 15-25°C.


Stable for 14 months when all components are stored correctly.


For Research Use Only. Not for Use in Diagnostic Procedures.

No references yet. Want to share one? Write us an email.