    <SEC-DOCUMENT>0001564590-21-020375-index.html : 20210423
    <SEC-HEADER>0001564590-21-020375.hdr.sgml : 20210423
    <ACCEPTANCE-DATETIME>20210423165053
    ACCESSION NUMBER:		0001564590-21-020375
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20210423
    DATE AS OF CHANGE:		20210423

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Adaptive Biotechnologies Corp
    		CENTRAL INDEX KEY:			0001478320
    		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
    		IRS NUMBER:				270907024
    		STATE OF INCORPORATION:			WA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38957
    		FILM NUMBER:		21850479

    	BUSINESS ADDRESS:
    		STREET 1:		1551 EASTLAKE AVENUE EAST SUITE 200
    		CITY:			SEATTLE
    		STATE:			WA
    		ZIP:			98102
    		BUSINESS PHONE:		206-659-0067

    	MAIL ADDRESS:
    		STREET 1:		1551 EASTLAKE AVENUE EAST SUITE 200
    		CITY:			SEATTLE
    		STATE:			WA
    		ZIP:			98102

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Adaptive TCR Corp
    		DATE OF NAME CHANGE:	20091209
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>adpt-defa14a_20210611.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: adpt-defa14a_20210611.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>gbqh1oxadoko000002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: gbqh1oxadoko000002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>gbqh1oxadoko000001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: gbqh1oxadoko000001.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>