SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549



                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934



Date of Report (Date of earliest event reported):  February 11, 2000



                                  LabOne, Inc.
                      ------------------------------------
                          (Exact name of registrant as
                            specified in its charter)



      Missouri                            0-16946              43-1039532
- ----------------------------            -------------       -----------------
(State or other jurisdiction           (Commission          (I. R. S. Employer
     or incorporation                   File Number)        Identification No.)

10101 Renner Road,
Lenexa, KS                    66219
- -------------------------     -----
(Address of principal         (Zip Code)
executive offices)


Registrant's telephone number, including area code:    913-888-1770
                                                     ----------------------


                                 Not Applicable
                     --------------------------------------
          (Former name or former address, if changed since last report)


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Item 5.  Other Information

     On  February  11,  2000,  the  Board of  Directors  of  LabOne,  Inc.  (the
"Company")  adopted a  shareholder  rights  plan.  The rights plan  replaces and
modernizes  a  shareholder  rights plan which was adopted by the Company in 1988
and expired in 1998.


Declaration of Rights Dividend

     In  conjunction  with the rights plan,  the Board of  Directors  declared a
dividend  distribution of one Right for each outstanding  share of Common Stock,
$.01 par value per share,  of the  Company  ("Common  Stock").  The  dividend is
payable on February 25, 2000 to  shareholders of record at the close of business
on that date. Each Right entitles the registered holder thereof to purchase from
the Company at any time  following the  Distribution  Date (as defined  below) a
unit consisting of one one-hundredth of a share (a "Unit") of Series A Preferred
Stock, $.01 par value per share (the "Preferred  Stock"), at a purchase price of
$50.00 per Unit (the  "Purchase  Price"),  subject to  adjustment  as  described
below.  The  Rights  are  not  exercisable  until  the  Distribution  Date.  The
description  and terms of the Rights are set forth in a Rights  Agreement  dated
February  11, 2000 (the  "Rights  Agreement")  between the Company and  American
Stock Transfer & Trust Company, as Rights Agent.

      Rights will also be issued with  respect to shares of Common  Stock issued
by the Company or  transferred  from the Company's  treasury  after February 25,
2000 and prior to the  Distribution  Date,  and,  under  certain  circumstances,
Rights  will be  issued  with  respect  to  shares  of  Common  Stock  issued or
transferred by the Company after the Distribution Date.

Rights Initially Attached to and Trade with Common Stock

      Until the  earlier  of the  Distribution  Date or the date the  Rights are
redeemed  or  expire:   (1)  the  Rights  will  be  evidenced  by  Common  Stock
certificates and no separate Rights  Certificates  will be distributed,  (2) the
Rights  will be  transferable  only  in  connection  with  the  transfer  of the
underlying  shares of Common Stock, (3) the surrender for transfer of any Common
Stock  certificate  (with or without a copy of this  Summary of Rights  attached
thereto) will also  constitute  the transfer of the Rights  associated  with the
shares of Common Stock  represented by such certificate and (4) new Common Stock
certificates   issued   after   February   25,  2000  will  contain  a  notation
incorporating  the  Rights  Agreement  by  reference.  Shareholders  will not be
required  to take any  action  in  connection  with the  payment  of the  Rights
dividend on February 25, 2000.

When Rights Separate from Common Stock and Become Exercisable

      The Rights will separate from the Common Stock and become  exercisable  on
the  Distribution  Date,  which will occur upon the earlier of (1) ten  business
days after the Stock  Acquisition  Date (as defined  below) or (2) ten  business
days (or such  later  date as the Board  shall  determine  prior to such time as
there is an Acquiring  Person) following the commencement of, or announcement of
an intention  to make, a tender or exchange  offer,  the  consummation  of which
would result in a Person becoming an "Acquiring  Person." The "Stock Acquisition
Date" means the earlier of (i) the date of the first public  announcement by the
Company or an Acquiring  Person that an Acquiring Person has become such or (ii)
the date on which  the  Company  has  actual  notice,  direct  or  indirect,  or
otherwise  determines that a Person has become an Acquiring  Person.  As soon as
practicable after the Distribution  Date, Rights  Certificates will be mailed to
holders of record of

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the Common  Stock as of the close of  business  on the  Distribution  Date,  and
thereafter the separate Rights Certificates will represent the Rights.

      Under the Rights Agreement,  an Acquiring Person is a Person who, together
with all affiliates and associates of such Person, and without the prior written
approval  of the  Company,  is the  Beneficial  Owner (as  defined in the Rights
Agreement)  of 15% or more of the  outstanding  shares  of  Common  Stock of the
Company,  subject to a number of exceptions  set forth in the Rights  Agreement.
The Rights  Agreement  exempts certain persons from the definition of "Acquiring
Person,"   including  (1)  Grant  Family  Members  (as  defined  in  the  Rights
Agreement),   who  currently   beneficially  own  approximately   17.4%  of  the
outstanding  shares of Common Stock,  unless such family  members  become (other
than with the prior written  approval of the Board of Directors or pursuant to a
Qualifying  Offer) the Beneficial  Owners of 20% or more of the shares of Common
Stock then  outstanding,  excluding  shares of Common Stock and other securities
acquired on or after February 11, 2000 pursuant to certain  employee or director
benefit  plans,  (2) the  Company or any  subsidiary  of the Company and (3) any
employee  benefit  plan of the Company or any  subsidiary  and  certain  persons
appointed pursuant to the terms of any such plan. Under the Rights Agreement,  a
Person  shall not be an  Acquiring  Person if such  Person  acquires  beneficial
ownership of 15% or more of the outstanding shares of Common Stock pursuant to a
Qualifying Offer, which is a cash tender offer for all of the outstanding shares
of  Common  Stock  which  meets  certain  conditions  specified  in  the  Rights
Agreement.   The  Rights   Agreement   contains   exceptions   for  Persons  who
inadvertently  become Acquiring  Persons or who exceed the ownership limits as a
result  of  repurchases  of stock by the  Company,  if  certain  conditions  are
satisfied.

Adjustment of Rights upon Occurrence of a Triggering Event

      In the event that a Person becomes an Acquiring  Person,  each holder of a
Right (except the Acquiring Person and certain other persons as described below)
will no longer have the right to purchase Units of Preferred  Stock, but instead
will thereafter have the right to receive, upon exercise of the Right, shares of
Common Stock (or, in certain  circumstances,  cash, property or other securities
of the  Company)  having a  Current  Market  Price  (as  defined  in the  Rights
Agreement)  equal to two times the then current exercise price of the Right. For
example,  at a  Purchase  Price of $50 per  Right,  each  Right  not owned by an
Acquiring Person would entitle its holder to purchase $100 worth of Common Stock
(or other consideration, as noted above) for $50. Assuming that the Common Stock
has a per share value of $10 at such time,  the holder of each valid Right would
be  entitled  to  purchase  ten  shares of Common  Stock for $50.  Once a Person
becomes an Acquiring Person, all Rights that are, or under certain circumstances
were,  beneficially  owned by such Acquiring Person (or certain related parties)
will be null and void.

      In the event that, at any time after the Stock  Acquisition  Date, (1) the
Company is acquired in a merger or other  business  combination  transaction  in
which the Company is not the  surviving  corporation  (other than a merger which
follows a Qualifying Offer and satisfies certain other requirements), or (2) 50%
or more of the Company's  assets or earning power is sold or  transferred,  each
holder of a Right (except Rights which  previously have been voided as set forth
above) shall thereafter have the right to receive,  upon exercise,  common stock
of the acquiring  company  having a Current  Market Price equal to two times the
then current Purchase Price of the Right. The events set forth in this paragraph
and in the preceding paragraph which allow Rights

                                      -3-



to be  exercised  are  referred  to  individually  as a  "Triggering  Event" and
collectively as "Triggering Events."

Exchange of Rights

      At any time after any Person  becomes an  Acquiring  Person,  the Board of
Directors of the Company may, at its option,  exchange the Rights (except Rights
which  previously have been voided as set forth above),  in whole or in part, at
an exchange ratio of one-hundredth of a share of Preferred Stock or one share of
Common Stock for each Right,  subject to adjustment  for any stock split,  stock
dividend or similar transaction  occurring after February 25, 2000. The Board of
Directors  may not cause the  exchange  of Rights at any time after any  Person,
together with such person's  affiliates and  associates,  becomes the beneficial
owner of 50% or more of the  shares  of  Common  Stock  then  outstanding,  with
certain exceptions.

Redemption of Rights

      At any time prior to the close of business on the tenth business day after
the Stock Acquisition Date, the Company may order that all Rights be redeemed at
a price of $.01 per Right (payable in cash, Common Stock or other  consideration
deemed  appropriate  by the Board of  Directors),  subject to adjustment for any
stock split, stock dividend or similar transaction  occurring after February 25,
2000 (the "Redemption Price").  Immediately upon the effectiveness of the action
of the  Board of  Directors  ordering  redemption  of the  Rights,  the right to
exercise  the Rights will  terminate  and the holders of the Rights will only be
entitled to receive the Redemption Price for each Right so held.

Amendment of Rights

      At any time and from time to time  prior to the close of  business  on the
tenth business day after the Stock  Acquisition  Date, the Company may amend the
Rights in any manner without the approval of any holders of Rights.  At any time
and from time to time  after the close of  business  on the tenth  business  day
after the Stock Acquisition Date, the Company may supplement or amend the Rights
without  the  approval  of any  holders  of the  Rights,  provided  that no such
supplement or amendment adversely affects the interests of the holders of Rights
as such (other than an  Acquiring  Person or an  affiliate  or  associate  of an
Acquiring Person).

Terms of Preferred Stock

      Each Unit of Preferred Stock  (consisting of one  one-hundredth of a share
of  Preferred  Stock) that is  issuable  upon  exercise of the Rights  after the
Distribution  Date and prior to the occurrence of a Triggering Event is intended
to have  approximately  the same economic  rights and voting power as a share of
Common Stock, and the value of a Unit of Preferred Stock should  approximate the
value of one  share of Common  Stock.  Each  share of  Preferred  Stock  will be
entitled to dividend  payments equal to 100 times the aggregate per share amount
of all dividends  (other than a dividend  payable in Common Stock)  declared per
share of Common  Stock.  In the event of  liquidation,  the holders of shares of
Preferred  Stock will be entitled  to the greater of (a) a minimum  preferential
liquidation payment of $100 per share, or (b) 100 times the aggregate

                                      -4-



amount to be  distributed  per share of Common  Stock.  Each share of  Preferred
Stock will have 100 votes, voting together with, and on the same matters as, the
Common Stock. In the event of any merger,  consolidation or other transaction in
which  shares of Common  Stock are  exchanged  for or changed  into other stock,
securities,  cash and/or other  property,  each share of Preferred Stock will be
entitled to receive  100 times the amount  received  per share of Common  Stock.
These  rights are  protected by customary  anti-dilution  provisions.  Shares of
Preferred  Stock are not  redeemable.  Pursuant  to the  Rights  Agreement,  the
Company  reserves the right to require,  prior to the occurrence of a Triggering
Event,  that upon any exercise of Rights a number of Rights be exercised so that
only whole shares of Preferred Stock will be issued.

Adjustment of Rights and Securities Upon Certain Events

      The Purchase Price payable,  and the number of Units of Preferred Stock or
other securities or property  issuable,  upon exercise of the Rights are subject
to adjustment from time to time to prevent  dilution (1) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Stock, or (2) upon the distribution to holders of the Preferred Stock of certain
rights,  options,  warrants,  evidences  of  indebtedness  or assets  (excluding
regular  quarterly cash dividends).  No adjustment in the Purchase Price will be
required  until  cumulative  adjustments  amount to at least 1% of the  Purchase
Price.

      The number of  outstanding  Rights  attached to each share of Common Stock
and the number of Units of Preferred Stock  purchasable upon exercise of a Right
are also subject to adjustment in the event of a stock split of the Common Stock
or a stock  dividend on the Common Stock  payable in shares of Common Stock or a
subdivision or combination of the shares of Common Stock, occurring prior to the
Distribution Date.

      The Company is not required to issue  fractional  Units;  in lieu thereof,
the Company may pay cash for such fractional  Units based on the market price of
the Preferred Stock on the last trading date prior to the date of issuance.

Rights Holder Not a Shareholder

      Until a Right is  exercised,  the holder  thereof,  as such,  will have no
rights as a shareholder of the Company, including, without limitation, the right
to vote or to receive dividends.  The holders of Rights will be able to vote and
receive dividends on the Common Stock that they hold.

Tax Consequences

      While the  current  distribution  of the  Rights  will not be  taxable  to
shareholders  or  to  the  Company,   shareholders  might,  depending  upon  the
circumstances,  realize  taxable  income in the  event  that the  Rights  become
severable  from the Common Stock and will likely  realize  taxable income in the
event such Rights become  exercisable for common stock of the acquiring  company
as set forth above or are exchanged as provided above.

                                      -5-




Expiration of Rights

      The Rights will expire at the close of  business  on  February  25,  2010,
unless the Company  redeems or exchanges  the Rights prior to such date, in each
case as described above.

Rights Agreement

      This summary description of the Rights does not purport to be complete and
is  qualified  in its  entirety by  reference  to the Rights  Agreement  and the
exhibits thereto, filed herewith as Exhibit 4.1, which is incorporated herein by
reference.


Item 7.  Financial Statements and Exhibits


      (c)  Exhibits

      4.1  Rights Agreement dated as of February 11, 2000, between LabOne,  Inc.
           and  American  Stock  Transfer & Trust  Company,  which  includes  as
           Exhibit A, the Certificate of Designations  Preferences and Rights of
           Series  A  Preferred   Stock,  as  Exhibit  B,  the  Form  of  Rights
           Certificate,  and as  Exhibit C, the  Summary  of Rights to  Purchase
           Preferred Stock.

      99.1 Press Release of the Company dated February 11, 2000



                                      -6-




                                   SIGNATURES

      Pursuant to the  requirements of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                   LABONE, INC.






Date:  February 11, 2000            By: /s/ Kurt E. Gruenbacher
                                        -------------------------------
                                        Kurt E. Gruenbacher,
                                        V.P. Finance, Chief Accounting
                                        Officer and Treasurer




                                      -7-



                                  EXHIBIT INDEX


Assigned
Exhibit
Number                    Description of Exhibit



    4.1    Rights Agreement dated as of February 11, 2000, between LabOne,  Inc.
           and  American  Stock  Transfer & Trust  Company,  which  includes  as
           Exhibit A, the Certificate of Designations  Preferences and Rights of
           Series  A  Preferred   Stock,  as  Exhibit  B,  the  Form  of  Rights
           Certificate,  and as  Exhibit C, the  Summary  of Rights to  Purchase
           Preferred Stock.

   99.1    Press Release of the Company dated February 11, 2000




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