SECURITIES AND EXCHANGE COMMISSION Washington,
                                  D.C. 20549
                                     
                                   FORM  8-A
                
                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
    PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934


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                           OSTEX INTERNATIONAL, INC.
            Exact Name of Registrant as Specified in Its Charter
                                                         
                                 WASHINGTON
                     State of Incorporation or Organization

                                91-1450247
                     IRS Employer Identification Number

                     2203 AIRPORT WAY SOUTH, SUITE 400
                         SEATTLE, WASHINGTON 98134
                   Address of Principal Executive Offices
                                  
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      Securities to be registered pursuant to Section 12(b) of the Act:
                                    
                                  [NONE]
                  Title of Each Class to Be So Registered

                                  [N/A]
        Name of Each Exchange on Which Each Class Is to Be Registered

If this Form relates to the registration of a class of debt securities  and is
effective upon filing pursuant to General Instruction A.(c)(1), please check the
following box: ............................................  [     ]

If this Form relates to the registration of a class of debt securities  and is 
to become effective simultaneously with the effectiveness of a concurrent
registration statement under the Securities Act of 1933 pursuant  to General
Instruction A.(c)(2), please check the following box:....... [     ]
                                                                   
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      Securities to be registered pursuant to Section 12(g) of the Act:
                                    
                     PREFERRED STOCK PURCHASE RIGHTS
                             Title of Class
                                   
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ITEM  1.  DESCRIPTION F REGISTRANT'S SECURITIES TO BEREGISTERED

     BOARD ACTION.  On January 10, 1997, the Board of Directors (the "Board of
Directors") of Ostex International, Inc. (the  "Company") declared a dividend of
one preferred share purchase right (a "Right") for each outstanding share of
common stock, par value $.01 per share (the  "Common Shares"), of the Company.
The dividend is payable on January 27, 1997 (the "Record Date") to the
shareholders of record on that date.  Each Right entitles the registered holder 
to purchase from the Company one one hundredth of share of Series A Junior
Participating Preferred Stock, par value $.01 per share (the "Preferred 
Shares"), of the Company at a price of $38 per one one-hundredth of a 
Preferred Share (the "Purchase Price"), subject to adjustment.  The 
description and terms of the Rights are set forth in a Rights Agreement 
(the "Rights Agreement") between the Company and ChaseMellon Shareholder 
Services L.L.C.,  as Rights Agent (the "Rights Agent").

     Approximately 12,438,667 Common Shares were outstanding as of January 27,
1997. Each Common Share outstanding at the close of business on
January 27, 1997 will receive one Right.  The Board of Directors of the Company
has reserved sufficient Preferred Shares for issuance upon exercise  of the
Rights.

     ANTITAKEOVER EFFECTS.  The Rights have certain antitakeover effects and
will cause substantial dilution  to a  person  or group that attempts to acquire
the Company on terms not approved by the Board of Directors.  The  Rights
should not affect any prospective offeror willing to make an all-cash  offer at 
a full and fair price,  or  willing  to negotiate  with the Board of Directors, 
nor will the  Rights interfere  with  any  merger or other business combination
approved by the Board of Directors

     TRIGGERING EVENTS.   Until the earlier to occur of (i) 10  days following a
public announcement that a person or group of affiliated or associated persons
(an  "Acquiring Person") has acquired beneficial ownership of 20% or more of the
outstanding Common Shares, or (ii) 10 business days (or such later date as may 
be determined by action of the Board of  Directors prior to such time as any 
person or  group  of affiliated persons becomes an Acquiring  Person)  following
the  commencement  of, or announcement of an  intention  to make, a tender offer
or exchange offer the consummation  of which  would result in the beneficial 
ownership by a  person or  group  of 20% or more of the outstanding Common  
Shares (the earlier  of such dates being called the  "Distribution Date"), the 
Rights will be evidenced, with respect to any of the  Common Share certificates 
outstanding as of the  Record Date, by such Common Share certificate with a 
copy of  this Summary of Rights attached thereto.

     ATTACHMENT TO COMMON STOCK.   The  Rights  Agreement provides  that, until
the Distribution  Date  (or  earlier redemption or expiration of the
Rights), the Rights will  be transferred with and only with the Common Shares.
Until the Distribution  Date (or earlier redemption or  expiration  of the
Rights), new Common Share certificates issued after the Record  Date upon 
transfer or new issuance of Common  Shares will contain a notation 
incorporating the Rights  Agreement by  reference.   Until  the Distribution  
Date  (or  earlier redemption  or expiration of the Rights), the 
surrender  for transfer of  any certificates for Common Shares outstanding as  
of the Record Date, even without such notation or a copy of  this Summary 
of Rights being attached thereto, will also constitute the transfer of the 
Rights associated  with  the Common Shares represented by such
certificate.  As soon  as practicable   following the  Distribution  Date,
separate certificates  evidencing the Rights  ("Right Certificates") will be
mailed to holders of record of the Common Shares  as of the close of business on
the Distribution Date, and such separate Right Certificates alone will evidence
the Rights.

     EXERCISE OF RIGHTS.  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.  Nonexercisable 
until the Distribution Date, the Rights will expire on
January 27, 2007 (the "Final Expiration Date"), unless the Final Expiration Date
is extended or unless the Rights are earlier redeemed or exchanged 
by the Company, in each case, as described below.



     The Purchase Price payable, and the number of Preferred Shares or other
securities or property issuable, upon exercise of the Rights are subject to
adjustment from time to time to prevent dilution (i) in the event of a stock
dividend  on,  or  a  subdivision,  combination or reclassification of, the
Preferred Shares, (ii) upon the grant to holders of the Preferred Shares of
certain rights or warrants to subscribe for or purchase Preferred Shares at a 
price, or securities convertible into Preferred Shares with a conversion price, 
less than the then-current market price of  the Preferred Shares, or (iii)  
upon the distribution to holders of the Preferred Shares of evidences of 
indebtedness or assets (excluding regular periodic cash dividends paid out of 
earnings or retained earnings or dividends payable in Preferred Shares) or of 
subscription rights or warrants (other than those referred to above).

     The number of outstanding Rights and the number of one one-hundredths of a
Preferred Share issuable upon exercise of each Right are also subject to
adjustment in the event of a stock split of the Common Shares or a stock 
dividend on the Common Shares payable in Common Shares or subdivisions, 
consolidations  or combinations of the  Common  Shares occurring, 
in any such case, prior to the Distribution Date.

     TERMS  OF  PREFERRED SHARES.  Preferred  Shares purchasable upon exercise
of the Rights will not be redeemable.  Each Preferred Share will be entitled 
to a minimum preferential quarterly dividend payment of $1 per share, but 
will be entitled to an aggregate dividend of 100 times the dividend declared
per Common Share. In the event of liquidation, the holders of the Preferred 
Shares will be entitled to a minimum preferential liquidation payment of 
$100 per share, but will be entitled to an aggregate payment of 100 times 
the payment made per Common Share.  Each Preferred Share will have 100 votes, 
voting together with the Common Shares. Finally, in the event of any 
merger, consolidation or other transaction in which Common Shares are
exchanged, each Share will be entitled to receive 100 times the amount
received per Common Share. These rights are protected by customary 
antidilution provisions.

     Because of the nature of the Preferred Shares' dividend, liquidation and
voting rights, the value of the one one-hundredth interest in a Preferred Share
purchasable upon exercise of each Right should approximate the value of one 
Common Share.
     
     If the Company is acquired in a merger or other business combination
transaction or 50% or more of its consolidated assets or earning power are sold
after a person or group has become an Acquiring Person, proper provision will be
made so that each holder of a Right will thereafter have the right to receive,
upon the exercise thereof at the then current exercise price of the Right, that
number of shares of common stock of the acquiring company that at the time of 
such transaction will have a market value of two times the exercise price of
the Right. If any person or group of affiliated or associated persons becomes  
an Acquiring Person, proper provision shall be made so that each holder of a 
Right, other than Rights beneficially owned by the Acquiring Person (which will
thereafter be void), will thereafter have the right to receive upon exercise 
that number of Common Shares having a market value of two times the exercise 
price of the Right.

     With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments require an adjustment of at least 1% in 
such Purchase Price. No fractional Preferred Shares will be issued (other than 
fractions that are integral multiples of one one-hundredth of a Preferred 
Share, which may, at the election of the Company, be evidenced by depositary 
receipts), and, in lieu thereof, an adjustment in cash will be made based 
on the market price of the Preferred Shares on the last trading day prior 
to the date of exercise.

     EXCHANGE OF RIGHTS. At any time after any person or group  becomes 
an Acquiring Person and prior to  the acquisition by such person or group 
of 50% or more of the outstanding Common Shares, the Board of Directors may 
exchange the Rights (other than Rights owned by such person or group that 
will have become void), in whole or in part, at an exchange ratio of one 
Common Share, or one onehundredth of a Preferred Share, per Right (subject 
to adjustment).


                                    
     REDEMPTION OF RIGHTS.  At any time prior to the acquisition by a
person or group of affiliated or associated persons of beneficial ownership of 
20% or more of the outstanding Common Shares, the Board of Directors may redeem 
the Rights in whole, but not in part, at a price of $.0001 per Right (the 
"Redemption Price"). The redemption of the Rights may be made effective at 
such time on such basis with such conditions as the Board of Directors in 
its sole discretion may establish. Immediately upon any redemption of the 
Rights, the right to exercise the Rights will terminate and the only right of 
the holders of Rights will be to receive the Redemption Price.

      AMENDMENT OF RIGHTS.  The terms of the Rights may be
amended by the Board of Directors without the consent of the holders of the
Rights, including an amendment to lower certain thresholds described above to 
not less than the greater of (i) the sum of  .001% and the largest
percentage of the outstanding Common Shares then known to the Company to be
beneficially owned by any person or group of affiliated or associated persons 
and (ii) 10%, except that, from and after such time as any person or group of
affiliated or associated persons becomes an  Acquiring
Person, no such amendment may adversely affect the interests of the holders of 
the Rights. The ability of the Board  of Directors to amend the terms of 
the Rights is in addition to and in no way limits the discretion of the Board 
of Directors to redeem the Rights.

      RIGHTS AGREEMENT.  A copy of the Rights Agreement is hereby filed with the
Securities and Exchange Commission as an Exhibit to this Registration Statement 
on Form 8-A.  A copy of the Rights Agreement is available 
free of charge from the Company.  This summary description of the Rights 
does not purport to be complete and is qualified in its entirety by reference 
to the Rights Agreement, which is hereby incorporated herein by reference.

ITEM 2.   EXHIBITS

Exhibit      
Number   Description
- -------  ---------------------------------------------------------------  
1.1      Form of Right Certificate [included as Exhibit B to Exhibit 2.1 
         to this Form 8-A].

2.1      Rights Agreement dated as of January 21, 1997 between Ostex 
         International, Inc. and ChaseMellon  Shareholder Services L.L.C..




                             SIGNATURE
                         
                         
      Pursuant to the requirements of Section 12 of the Securities Exchange 
Act of 1934, the registrant has duly caused this registration statement to be 
signed on its behalf by the undersigned hereunto duly authorized.
     
     Dated the 22nd day of January, 1997.

                                         OSTEX INTERNATIONAL, INC.


                                         By       /S/ ROBERT M. LITTAUER
                                             ---------------------------------
                                               Robert M. Littauer Senior Vice
                                             President of Finance & Operations



                              INDEX TO EXHIBITS
                                     TO
                                  FORM 8-A
Exhibit 
Number      Description
- -------     ---------------------------------------------------------------
1.1         Form of Right Certificate [included as Exhibit B to Exhibit 2.1 
            to this Form 8-A]. 
            
2.1         Rights Agreement dated as of January 21, 1997 between Ostex  
            International, Inc. and ChaseMellon Shareholder Services L.L.C..