-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 JRSPkmjN7wbj/97AOqC4WkHd5XmztOJ9BrvpNQE2Gqk00k4MZHcckbXMVZPGrRdY
 LjnaLqvW3YZn5Ru7XWDUMA==

<SEC-DOCUMENT>0001305963-08-000001.txt : 20080410
<SEC-HEADER>0001305963-08-000001.hdr.sgml : 20080410
<ACCEPTANCE-DATETIME>20080410145103
ACCESSION NUMBER:		0001305963-08-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080124
FILED AS OF DATE:		20080410
DATE AS OF CHANGE:		20080410

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IMMUNICON CORP
		CENTRAL INDEX KEY:			0001083132
		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY ANALYTICAL INSTRUMENTS [3826]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3401 MASONS MILL RD
		STREET 2:		SUITE 100
		CITY:			HUNTINGTON VALLEY
		STATE:			PA
		ZIP:			19006
		BUSINESS PHONE:		215 830 0777 X121

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hewett Byron D.
		CENTRAL INDEX KEY:			0001305963

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50677
		FILM NUMBER:		08749800

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		215-830-0777

	MAIL ADDRESS:	
		STREET 1:		3401 MASONS MILL RD
		STREET 2:		SUITE 100
		CITY:			HUNTINGDON VALLEY
		STATE:			PA
		ZIP:			19006
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-01-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001083132</issuerCik>
        <issuerName>IMMUNICON CORP</issuerName>
        <issuerTradingSymbol>IMMC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001305963</rptOwnerCik>
            <rptOwnerName>Hewett Byron D.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3401 MASONS MILL RD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>HUNTINGDON VALLEY</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19006</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock (non vested shares)</value>
            </securityTitle>
            <transactionDate>
                <value>2008-01-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4168</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.73</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>134705</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares were derived from a 35,000 non vested share grant, dated 01/24/2007, and were surrendered to satisfy a tax liability incurred from the vesting of 11,666 shares 01/24/2008.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Byron D. Hewett</signatureName>
        <signatureDate>2008-04-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----