Table 1.

Summary of selective kits for circulation tumor DNA extraction.

Origin of ctDNA	Selective Kit
Blood	QIAsymphony DSP Virus/Pathogen Midi Kit
	MagMAX™ Cell-Free DNA Isolation Kit
	DSP Circulating DNA Kit
	QIAamp Circulating Nucleic Acid Kit
	EliteHealth cfDNA Extraction Kit
Urine	QIAamp Circulating Nucleic Acid Kit
Cerebrospinal fluid	QIAamp Circulating Nucleic Acid Kit
	QIAsymphony DSP Virus/Pathogen Midi Kit
	QIAsymphony DSP Circulating DNA Kit
Feces	Fast DNA Stool Mini Kit
Ascites	QIAamp Circulating Nucleic Acid Kit
Pleural effusions	QIAamp Circulating Nucleic Acid Kit