What are the key components and steps involved in using a cell-free DNA extraction kit for isolating cell-free DNA from biological samples?

The key components and steps involved in using a cell-free DNA extraction kit for isolating cell-free DNA from biological samples include:

1. Sample collection and preparation
2. Lysis of cells to release DNA
3. Binding of DNA to a membrane or beads
4. Washing to remove impurities
5. Elution of purified DNA
6. Quantification and analysis of extracted DNA.