<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.

<CIK> 0000830158
<NAME> LABONE, INC.

                             
<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
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          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