LORD ABBETT SERIES FUND INC
NSAR-B, 2000-02-28
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<PAGE>      PAGE  1
000 B000000 12/31/1999
000 C000000 0000855396
000 D000000 N
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000 F000000 Y
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000 J000000 A
001 A000000 LORD ABBETT SERIES FUND, INC.
001 B000000 811-5876
001 C000000 2013952000
002 A000000 90 HUDSON STREET
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002 D020000 3973
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<PAGE>      PAGE  2
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<PAGE>      PAGE  3
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012 A00AA01 DST SYSTEMS INC.
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<PAGE>      PAGE  4
020 A000004 EDWARDS (A.G.) & SONS
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
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<PAGE>      PAGE  12
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<PAGE>      PAGE  13
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<PAGE>      PAGE  14
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
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<PAGE>      PAGE  18
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<PAGE>      PAGE  19
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SIGNATURE   DONNA M. MCMANUS
TITLE       TREASURER


Independent Auditors' Report

To the Board of Directors and Shareholders,
Lord Abbett Series Fund, Inc.:

We have audited the accompanying  statements of net assets of Lord Abbett Series
Fund,  Inc. - Growth  and  Income  Portfolio,   Mid-Cap  Value  Portfolio  and
International  Portfolio  as of December  31, 1999,  the related  statements  of
operations  and of changes in net assets and the  financial  highlights  for the
periods presented.  These financial  statements and the financial highlights are
the responsibility of the Fund's management. Our responsibility is to express an
opinion on these  financial  statements  and financial  highlights  based on our
audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance  about  whether the  financial  statements  and  financial
highlights are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements. Our procedures included confirmation of securities owned at December
31, 1999 by  correspondence  with the custodian and brokers;  where replies were
not received from brokers, we performed other auditing procedures. An audit also
includes assessing the accounting principles used and significant estimates made
by  management,   as  well  as  evaluating  the  overall   financial   statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

In our opinion,  such  financial  statements  and financial  highlights  present
fairly, in all material  respects,  the financial position of Lord Abbett Series
Fund,  Inc.  - Growth  and  Income  Portfolio,   Mid-Cap  Value  Portfolio  and
International  Portfolio at December 31, 1999, the results of their  operations,
the changes in their net assets and their  financial  highlights for the periods
presented, in conformity with generally accepted accounting principles.


DELOITTE & TOUCHE LLP
New York, New York
February 28, 2000


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<CIK> 0000855396
<NAME> LORD ABBETT SERIES FUND, INC.
<SERIES>
   <NUMBER> 011
   <NAME> GROWTH & INCOME PORTFOLIO

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<TABLE> <S> <C>

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<CIK> 0000855396
<NAME> LORD ABBETT SERIES FUND, INC.
<SERIES>
   <NUMBER> 031
   <NAME> INTERNATIONAL PORTFOLIO

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<TABLE> <S> <C>

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<CIK> 0000855396
<NAME> LORD ABBETT SERIES FUND, INC.
<SERIES>
   <NUMBER> 021
   <NAME> MID-CAP VALUE PORTFOLIO

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