<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from
the second quarter 2000 report on Form 10-Q for LabOne, Inc. and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<CIK> 0000830158
<NAME> LABONE, INC.
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> JUN-30-2000
<CASH> 1,369,529
<SECURITIES> 0
<RECEIVABLES> 29,703,605
<ALLOWANCES> 2,998,328
<INVENTORY> 2,959,241
<CURRENT-ASSETS> 38,288,644
<PP&E> 85,458,101
<DEPRECIATION> 40,943,299
<TOTAL-ASSETS> 119,365,594
<CURRENT-LIABILITIES> 19,361,930
<BONDS> 32,247,126
0
0
<COMMON> 130,500
<OTHER-SE> 65,845,286
<TOTAL-LIABILITY-AND-EQUITY> 119,365,594
<SALES> 0
<TOTAL-REVENUES> 79,742,069
<CGS> 0
<TOTAL-COSTS> 52,364,300
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 1,291,594
<INTEREST-EXPENSE> 1,098,145
<INCOME-PRETAX> 2,246,943
<INCOME-TAX> 1,465,706
<INCOME-CONTINUING> 781,237
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 781,237
<EPS-BASIC> 0.07
<EPS-DILUTED> 0.07
</TABLE>