<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from
the first 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.

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                       2,171,418
<SECURITIES>                                         0
<RECEIVABLES>                               31,119,638
<ALLOWANCES>                                 2,782,834
<INVENTORY>                                  2,315,989
<CURRENT-ASSETS>                            37,635,603
<PP&E>                                      82,635,603
<DEPRECIATION>                              39,414,283
<TOTAL-ASSETS>                             117,938,738
<CURRENT-LIABILITIES>                       19,370,611
<BONDS>                                     31,251,192
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       130,500
<OTHER-SE>                                  65,649,867
<TOTAL-LIABILITY-AND-EQUITY>               117,938,738
<SALES>                                              0
<TOTAL-REVENUES>                            40,581,050
<CGS>                                                0
<TOTAL-COSTS>                               26,583,356
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                               758,209
<INTEREST-EXPENSE>                             495,279
<INCOME-PRETAX>                              1,156,654
<INCOME-TAX>                                   739,036
<INCOME-CONTINUING>                            417,618
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   417,618
<EPS-BASIC>                                       0.04
<EPS-DILUTED>                                     0.04