    <SEC-DOCUMENT>0001193125-25-103931-index.html : 20250429
    <SEC-HEADER>0001193125-25-103931.hdr.sgml : 20250429
    <ACCEPTANCE-DATETIME>20250429163516
    ACCESSION NUMBER:		0001193125-25-103931
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20250429
    DATE AS OF CHANGE:		20250429

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Guardant Health, Inc.
    		CENTRAL INDEX KEY:			0001576280
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MEDICAL LABORATORIES [8071]
    		ORGANIZATION NAME:           	08 Industrial Applications and Services
    		EIN:				454139254
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38683
    		FILM NUMBER:		25888381

    	BUSINESS ADDRESS:
    		STREET 1:		3100 HANOVER STREET
    		CITY:			PALO ALTO
    		STATE:			CA
    		ZIP:			94304
    		BUSINESS PHONE:		855-698-8887

    	MAIL ADDRESS:
    		STREET 1:		3100 HANOVER STREET
    		CITY:			PALO ALTO
    		STATE:			CA
    		ZIP:			94304
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>d903354ddefa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: d903354ddefa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>g903354g03a01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: g903354g03a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>g903354g04x01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: g903354g04x01.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>