Company:  BLACKROCK SERIES FUND, IN ...
Form Type:  485BPOS
Filing Date:  4/13/2012 
CIK:  0000319108 
Address:  100 BELEVUE PARKWAY 
City, State, Zip:  WILMINGTON, Delaware 19809 
Telephone:  800-441-7762 
Fiscal Year:  12/31 
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  FORM 485BPOS
    Investment Objective
    Fees and Expenses of the Fund
      OPERATING EXPENSES
      OPERATING EXPENSES
    Principal Investment Strategies of the Fund
    Principal Risks of Investing in the Fund
    Performance Information
    Investment Manager
    Investment Objective
    Principal Investment Strategies
    Investment Risks
    Principal Risks of Investing in the Fund:
    Financial Highlights
      FINANCIAL HIGHLIGHTS TABLE
    Investment Objective
    Fees and Expenses of the Fund
      OPERATING EXPENSES
      OPERATING EXPENSES
    Principal Investment Strategies of the Fund
    Principal Risks of Investing in the Fund
    Performance Information
    Investment Manager
    Investment Objective
    Principal Investment Strategies
    Investment Risks
    Principal Risks of Investing in the Fund:
    Financial Highlights
      FINANCIAL HIGHLIGHTS TABLE
    Investment Objective
    Fees and Expenses of the Fund
      OPERATING EXPENSES
      OPERATING EXPENSES
    Principal Investment Strategies of the Fund
    Principal Risks of Investing in the Fund
    Performance Information
    Investment Manager
    Investment Objective
    Principal Investment Strategies
    Investment Risks
    Principal Risks of Investing in the Fund:
    Financial Highlights
      FINANCIAL HIGHLIGHTS TABLE
    Investment Objective
    Fees and Expenses of the Fund
      OPERATING EXPENSES
      OPERATING EXPENSES
    Principal Investment Strategies of the Fund
    Principal Risks of Investing in the Fund
    Performance Information
    Investment Manager
    Investment Objective
    Principal Investment Strategies
    Investment Risks
    Principal Risks of Investing in the Fund
    Financial Highlights
      FINANCIAL HIGHLIGHTS TABLE
    Investment Objective
    Fees and Expenses of the Fund
      OPERATING EXPENSES
      OPERATING EXPENSES
    Principal Investment Strategies of the Fund
    Principal Risks of Investing in the Fund
    Performance Information
    Investment Manager
    Investment Objective
    Principal Investment Strategies
    Investment Risks
    Principal Risks of Investing in the Fund:
    Financial Highlights
      FINANCIAL HIGHLIGHTS TABLE
    Investment Objective
    Fees and Expenses of the Fund
      OPERATING EXPENSES
      OPERATING EXPENSES
    Principal Investment Strategies of the Fund
    Principal Risks of Investing in the Fund
    Performance Information
      FUND PERFORMANCE
    Investment Manager
    Investment Objective
    Principal Investment Strategies
    Investment Risks
    Principal Risks of Investing in the Fund:
    Financial Highlights
      FINANCIAL HIGHLIGHTS TABLE
    Investment Objective
    Fees and Expenses of the Fund
      OPERATING EXPENSES
      OPERATING EXPENSES
    Principal Investment Strategies of the Fund
    Principal Risks of Investing in the Fund
    Performance Information
    Investment Manager
    Investment Objective
    Principal Investment Strategies
    Investment Risks
    Principal Risks of Investing in the Fund:
    Financial Highlights
      FINANCIAL HIGHLIGHTS TABLE
    Investment Objective
    Fees and Expenses of the Fund
      OPERATING EXPENSES
      OPERATING EXPENSES
    Principal Investment Strategies of the Fund
    Principal Risks of Investing in the Fund
    Performance Information
    Investment Manager
    Investment Objective
    Principal Investment Strategies
    Investment Risks
    Principal Risks of Investing in the Fund
    Financial Highlights
      FINANCIAL HIGHLIGHTS TABLE
    How to Buy and Sell Shares
    Management of the Funds
      OPERATING EXPENSES
      PORTFOLIO OF INVESTMENTS
      PORTFOLIO OF INVESTMENTS
      FUND PERFORMANCE
    Dividends, Distributions and Taxes
    Statement of Additional Information
      Additional Information
    Statement of Additional Information
      Purchases and Redemptions
    STATEMENT OF ADDITIONAL INFORMATION
      I. Investment Objectives and Policies
      Share Ownership
        COMPENSATION TABLE
        FUND PERFORMANCE
        FUND PERFORMANCE
        FUND PERFORMANCE
        FUND PERFORMANCE
      Pricing of Fund Shares - Money Market Portfolio
      X. Additional Information
      Performance Data - Global Allocation Portfolio and Money ...
      Principal Shareholders
        BENEFICIAL OWNERS
        BENEFICIAL OWNERS
        BENEFICIAL OWNERS
      INVESTMENT RISKS AND CONSIDERATIONS
      Additional Risk Factors of OTC Transactions; Limitations on ...
      Code of Ethics
      Directors and Officers
      Code of Ethics
      PRICING OF SHARES
      Determination of Net Asset Value
      PORTFOLIO TRANSACTIONS AND BROKERAGE
      PERFORMANCE DATA
      Additional Information
    APPENDIX A
    Appendix B
      III. CONFLICTS MANAGEMENT
    PART C. OTHER INFORMATION
      Item 28. Exhibits.
        PORTFOLIO OF INVESTMENTS
      Item 29. Persons Controlled By or Under Common Control with ...
      Item 30. Indemnification.
      Item 31. Business and Other Connections of Investment Adviser.
      Item 32. Principal Underwriters.
        NAME AND TITLE
      Item 33. Location of Accounts and Records.
      Item 34. Management Services.
      Item 35. Undertakings.
    SIGNATURES
    EXHIBIT INDEX
  EXHIBIT 10