EXHIBIT 10.2

                         PROMISSORY NOTE


$150,000                                      September 7, 1994
                                                 Lenexa, Kansas

     FOR VALUE RECEIVED, BERT H. HOOD ("maker") promises to pay
to the order of LABONE, INC., a Delaware corporation ("payee"),
at 10310 W. 84th Terrace, Lenexa, Kansas, or at such other
place as payee may from time to time designate in writing, the
principal sum of One Hundred Fifty Thousand Dollars ($150,000),
with interest accruing on the unpaid balance of the principal
sum from the date hereof until paid at a rate of seven and
three-quarter percent (7.75%) per annum.

     The principal sum of this Promissory Note shall be paid in
full on the earlier of (a) September 7, 1995, or (b) the date
of the termination of employment of maker pursuant to the terms
of the Employment Agreement between maker and payee, dated
August 5, 1993, as amended as of November 9, 1993 ("Employment
Agreement"), the terms and provisions of which are incorporated
herein by reference.  The principal sum of this Promissory Note
may be prepaid in whole or in part at any time, without
penalty, at the option of maker.

     Interest on this Promissory Note shall be payable
quarterly on December 1, March 1, June 1 and September 1, and
on the day that the unpaid balance of the principal sum is paid
in full.  Maker agrees that any sums due payee by maker under
this Promissory Note may, at the option of payee, be set off
and applied against any sums due maker by payee under the
Employment Agreement or otherwise.

     Maker waives presentment for payment, demand, protest and
notice of demand, protest and nonpayment.  In the event that it
should become necessary in the opinion of payee to employ
counsel to collect or enforce this Promissory Note, maker
agrees to pay all costs, charges, disbursements and reasonable
attorney's fees incurred by payee in collecting or enforcing
payment of this Promissory Note.  The failure of payee to
exercise any option or right to which payee may be entitled
shall not constitute a waiver of the right to exercise such
option or right at a subsequent time.  This Promissory Note has
been executed and delivered in, and is to be construed and
enforced according to and governed by, the laws of the State of
Kansas.


                                           /s/  BERT H. HOOD
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