    <SEC-DOCUMENT>0001274737-23-000036-index.html : 20230428
    <SEC-HEADER>0001274737-23-000036.hdr.sgml : 20230428
    <ACCEPTANCE-DATETIME>20230428160657
    ACCESSION NUMBER:		0001274737-23-000036
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20221231
    FILED AS OF DATE:		20230428
    DATE AS OF CHANGE:		20230428
    EFFECTIVENESS DATE:		20230428

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			EXAGEN INC.
    		CENTRAL INDEX KEY:			0001274737
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MEDICAL LABORATORIES [8071]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-39049
    		FILM NUMBER:		23865991

    	BUSINESS ADDRESS:
    		STREET 1:		1261 LIBERTY WAY
    		CITY:			VISTA
    		STATE:			CA
    		ZIP:			92081
    		BUSINESS PHONE:		(760) 560-1501

    	MAIL ADDRESS:
    		STREET 1:		1261 LIBERTY WAY
    		CITY:			VISTA
    		STATE:			CA
    		ZIP:			92081

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	EXAGEN DIAGNOSTICS INC
    		DATE OF NAME CHANGE:	20031230
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>annualreportfinal-nitrofla.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: annualreportfinal-nitrofla.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>