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Preparation. Administration. Evidence.

IV Dilution &
Medication Reference

Search 255 medications, read preserved historical references, and inspect separately reviewed preparation statements. Full monograph updates remain pending.

Version 6.4Release date 2026-11-04For healthcare professionals

Calculation workspace

Preparation calculators

Preparation arithmeticHistorical BUD screen

The arithmetic tool uses your inputs. The BUD screen uses visibly dated historical rules whose clinical qualification remains pending.

Historical rule calculation ; not a validated BUD assignment

BUD and immediate-use screening

Uses the restored v5.1 rule table.

These historical compounding rules await current evidence review. The result demonstrates the selected rule and entered limits; it does not certify category eligibility, current USP compliance, product stability, or an assigned clinical BUD.

Clear values

Select an explicit scenario, storage condition, date, and time zone. No scenario is selected automatically.

Restored historical rule table and source references

Original wording is preserved below as dated source content, including any historical use of the word "current."

Version
USP <797> 2023 framework screening table
Source IDH51-508E17F512BE47C87AEB19AA
Important
  1. A sterility-based BUD ceiling is not the same as a manufacturer expiration date or a drug-specific chemical-stability limit.
    Source IDH51-AB5C99BEB9C3F22EB9AECF4C
  2. The assigned BUD cannot exceed the shortest applicable limit, including sterility category, drug stability, container/closure compatibility, component expiration, and institutional policy.
    Source IDH51-223CCD0760702AC3271D2DFA
  3. This calculator cannot determine whether a preparation qualifies for Category 1, Category 2, Category 3, or immediate-use conditions. The compounder must make that determination.
    Source IDH51-3EE05E7F19C70E359D91A0D0
  4. For immediate-use CSPs, the four-hour value is an administration-start deadline. Do not merge it with a drug-specific completion or discard limit as though all limits govern the same event.
    Source IDH51-48D652B8A90F63E7B736B291
Scenarios
  1. Source IDH51-BDE71190972C4FB542189FB4
    Id
    immediate-use
    Source IDH51-768C2CD0A242399FAE5A0A7E
    Label
    Immediate-use CSP
    Source IDH51-7310C2EBC64D2FA7C3A4FD0B
    Description
    For CSPs that meet every immediate-use condition. Administration must begin within 4 hours after the start of preparation.
    Source IDH51-783F0DC1FFFC6605AB03EE8E
    Limits hours
    Controlled room
    4
    Source IDH51-BA8CB60844DEE358F202BE4D
  2. Source IDH51-B6A665B881C2D25603EBD2A6
    Id
    category-1
    Source IDH51-9C6A83C901B081FCDBE123BF
    Label
    Category 1 CSP
    Source IDH51-1CE5E94FE5A0798E6175CD46
    Description
    Prepared in a segregated compounding area and meeting all Category 1 requirements.
    Source IDH51-675DE7B1418743D6084031E5
    Limits hours
    Controlled room
    12
    Source IDH51-9E46AB8B98FB1D2A000ACA7E
    Refrigerated
    24
    Source IDH51-36CD9810B313FEB2AC14CEC8
  3. Source IDH51-7B9D98090ADB60F06039F30E
    Id
    category-2-aseptic-nonsterile-no-test
    Source IDH51-D24156DBA6454068F93D6D92
    Label
    Category 2: aseptic process, one or more nonsterile starting components, no sterility test
    Source IDH51-9B13497569B4CB05A5C4CB85
    Description
    Maximum ceiling from the current USP <797> framework when all listed conditions are satisfied.
    Source IDH51-592C9AEBE4A17BE11AA6C6CF
    Limits hours
    Controlled room
    24
    Source IDH51-FF159EE98664A64418F5E7A6
    Refrigerated
    96
    Source IDH51-0AAB0B4417669EF47B28CCA7
    Frozen
    1080
    Source IDH51-B0D389BB900CD2333A68CE0E
  4. Source IDH51-3795301480AD79C0285370BA
    Id
    category-2-aseptic-sterile-no-test
    Source IDH51-5623876C762626B8EAF8619E
    Label
    Category 2: aseptic process, only sterile starting components, no sterility test
    Source IDH51-27011E1C1C03D843146CDA00
    Description
    Maximum ceiling from the current USP <797> framework when all listed conditions are satisfied.
    Source IDH51-FD19102DB27EEB4C8D07F1AB
    Limits hours
    Controlled room
    96
    Source IDH51-AC7FC0F7E16CA8EB544FC3BE
    Refrigerated
    240
    Source IDH51-5C521BE658346259E45EA191
    Frozen
    1080
    Source IDH51-483A7EAA8157546BC0D5BD92
  5. Source IDH51-9D286CEF9C567CC27B1453BB
    Id
    category-2-aseptic-sterile-tested
    Source IDH51-3D3BFE98A6E6C9B3834429D5
    Label
    Category 2: aseptic process, only sterile starting components, sterility tested
    Source IDH51-2BB5DC1E46F27932B8E4F49D
    Description
    Maximum ceiling from the current USP <797> framework when required sterility testing and all other conditions are satisfied.
    Source IDH51-ADF595E842855CD0F4FEADAD
    Limits hours
    Controlled room
    720
    Source IDH51-2584F68A218D2B9E365A3E8D
    Refrigerated
    1080
    Source IDH51-AACD81A919F31140A3B699DD
    Frozen
    1440
    Source IDH51-7D6E664FB1332D65B5A9E023
  6. Source IDH51-C1262F7430238AAE024785CC
    Id
    category-2-terminal-tested
    Source IDH51-25A68A87105CAD447066E5FB
    Label
    Category 2: terminally sterilized, sterility tested
    Source IDH51-5CE764B485101920EF33FCDE
    Description
    Maximum ceiling from the current USP <797> framework when terminal sterilization, sterility testing, and all other conditions are satisfied.
    Source IDH51-DF2A5A28255F6CB2AD2C9845
    Limits hours
    Controlled room
    1080
    Source IDH51-6E3B0C0BFB6186CDEE63A1C8
    Refrigerated
    1440
    Source IDH51-9829F25FAE0639781A742AE7
    Frozen
    2160
    Source IDH51-598FB646E20AF838D7B83A1F
  7. Source IDH51-A188B9B3C3772C79701B5E14
    Id
    category-3-aseptic-tested
    Source IDH51-112158283E696DBF52249F1E
    Label
    Category 3: aseptic process, sterility tested
    Source IDH51-0DD409DEE3427A8E2291CEDA
    Description
    Extended ceiling available only when all Category 3 requirements, including stability-indicating data and additional environmental/personnel requirements, are satisfied.
    Source IDH51-E478597F2B0E670BAAADE170
    Limits hours
    Controlled room
    1440
    Source IDH51-9558FEF1FC2B5FFA338C55C7
    Refrigerated
    2160
    Source IDH51-37DD6DC43FD086D096272CEE
    Frozen
    2880
    Source IDH51-E6138D9B98A7807980D3F509
  8. Source IDH51-A16752C421204CCC863CB4BD
    Id
    category-3-terminal-tested
    Source IDH51-C7E31DAD5D71AD038EBA8FB8
    Label
    Category 3: terminally sterilized, sterility tested
    Source IDH51-6040AC29A9F68D129608FAE9
    Description
    Extended ceiling available only when all Category 3 requirements are satisfied.
    Source IDH51-4AEEE21EDB37AE78CCD5CFEE
    Limits hours
    Controlled room
    2160
    Source IDH51-5484E73E4DF181DE5670C3B8
    Refrigerated
    2880
    Source IDH51-95B1E4BBE30677F8B720288A
    Frozen
    4320
    Source IDH51-8C21E5348FE64E463BE7FAF1
Storage labels
Controlled room
Controlled room temperature
Source IDH51-03C162FB23C1D61F19D885E9
Refrigerated
Refrigerated
Source IDH51-6F746332330D4A3AF2BF87B1
Frozen
Frozen
Source IDH51-BCA3966D4098AF455BF1F6DC
References
LabelUrl
Source IDH51-B6BE1933FA424B5B18BDF955
USP General Chapter <797> Compounding Standards
Source IDH51-A16AA219E686C71BE8960994
https://www.usp.org/compounding/general-chapter-797 (opens in a new tab)
Source IDH51-E065E5F09CF4942063AB5A97
Source IDH51-FD517389541EADD25FD8A069
USP Compounding Standards Updates
Source IDH51-14AD7513CB6CB9A10A14E431
https://www.usp.org/compounding/updates (opens in a new tab)
Source IDH51-98B102CBDBA99AC6E1BCA624