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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 NoleTvv2yjMP8YW46FHyoa2cQeV8ycOpy303ecdpIfN+ImxZ/e6eKg3FPE2yUKO9
 jTsn8mp0q+d1VJ453/5QBw==

<SEC-DOCUMENT>0000904454-03-000122.txt : 20030519
<SEC-HEADER>0000904454-03-000122.hdr.sgml : 20030519
<ACCEPTANCE-DATETIME>20030516185031
ACCESSION NUMBER:		0000904454-03-000122
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030514
FILED AS OF DATE:		20030519

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LABONE INC/
		CENTRAL INDEX KEY:			0000830158
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MEDICAL LABORATORIES [8071]
		IRS NUMBER:				431039532
		STATE OF INCORPORATION:			MO
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10101 RENNER BLVD
		STREET 2:		P. O. BOX 7568
		CITY:			LENEXA
		STATE:			KS
		ZIP:			66219
		BUSINESS PHONE:		9138881770

	MAIL ADDRESS:	
		STREET 1:		10101 RENNER BLVD
		STREET 2:		X
		CITY:			LENEXA
		STATE:			KS
		ZIP:			66219

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LAB HOLDINGS INC
		DATE OF NAME CHANGE:	19980406

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SEAFIELD CAPITAL CORP
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SEAFIELD CAPTIAL CORP
		DATE OF NAME CHANGE:	19910520

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WELSH CARSON ANDERSON & STOWE IX LP
		CENTRAL INDEX KEY:			0001123639
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-92137
		FILM NUMBER:		03709460

	BUSINESS ADDRESS:	
		STREET 1:		320 PARK AVENUE
		STREET 2:		SUITE 2500
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2128415755

	MAIL ADDRESS:	
		STREET 1:		320 PARK AVENUE
		STREET 2:		SUITE 2500
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

<documentType>4</documentType><periodOfReport>2003-05-14</periodOfReport>
<issuer><issuerCik>0000830158</issuerCik>
        <issuerName>LABONE INC/</issuerName>
<issuerTradingSymbol>LABS</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001123639</rptOwnerCik>
            <rptOwnerName>WELSH CARSON ANDERSON &amp; STOWE IX LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
<reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>1</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeSecurity><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-05-14</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>X</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>196000</value></transactionShares><transactionValue><value>1961.02</value><footnoteId id="F1"/></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>196000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></no
nDerivativeSecurity><nonDerivativeSecurity><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-05-14</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>15600</value></transactionShares><transactionValue><value>348348</value></transactionValue><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>180400</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></nonDerivativeSecurity><nonDerivativeSecurity><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-05-15</value></transactionDat
e><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>8600</value></transactionShares><transactionValue><value>187652</value></transactionValue><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>171800</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></nonDerivativeSecurity><derivativeSecurity><securityTitle><value>Warrants to Purchase Common Stock</value></securityTitle><conversionOrExercisePrice><value>.01</value></conversionOrExercisePrice><transactionDate><value>2003-05-14</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><tra
nsactionCode>X</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>196102</value></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2001-08-31</value></exerciseDate><expirationDate><value>2008-08-31</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>196102</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>143699</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></derivativeSecurity><footnotes><footnote id="F1">Pursuant to the net exercise provisions 
of the Warrants, rather than paying cash for the exercise price of the Warrants, Welsh, Carson, Anderson &amp;amp; Stowe IX, L.P. (&amp;quot;WCAS IX&amp;quot;) used shares of Common Stock that would have otherwise been issuable under the Warrants as payment for the exercise price.  Therefore, the price paid for the shares actually acquired by WCAS IX also includes the exercise price paid for the shares retained by the issuer as payment for the exercise price.  The value of the shares of Common Stock used in accordance with the net exercise provision of the Warrants was $19.31 per share.</footnote></footnotes><ownerSignature><signatureName>Jonathan M. Rather, Managing Member</signatureName><signatureDate>2003-05-15</signatureDate></ownerSignature></ownershipDocument>

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