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HL7 & InterfacesGenerated accuracy model review: 2026-05-06

MLLP Wrapper accuracy and testing

This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.

Formula source

  • The MLLP standard wraps the message data block as follows: `<VT> Data <FS> <CR>` * **<VT> (Vertical Tab):** ASCII 11 (0x0B). Signals start of message. * **<FS> (File Separator):** ASCII 28 (0x1C). Signals end of data. * **<CR> (Carriage Return):** ASCII 13 (0x0D). Signals end of block.

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

  • HL7 Message: MSH|^~\&|EPIC|HOSP|LIS|LAB|202310261200||ADT^A01|MSG00001|P|2.5

Expected outputs

  • Visual Representation: <VT>MSH|^~\&|EPIC|HOSP|LIS|LAB|202310261200||ADT^A01|MSG00001|P|2.5<FS><CR>
  • Hex String: 0B 4D 53 48 7C 5E 7E 5C 26 7C 45 50 49 43 7C 48 4F 53 50 7C 4C 49 53 7C 4C 41 42 7C 32 30 32 33 31 30 32 36 31 32 30 30 7C 7C 41 44 54 5E 41 30 31 7C 4D 53 47 30 30 30 30 31 7C 50 7C 32 2E 35 1C 0D

Known limitations

  • This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
  • Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

  • This tool wraps the text you provide with the conventional MLLP start and end bytes only; it does not open sockets or transmit the message itself.
  • The hex output represents the current browser string content byte-by-byte and is intended for inspection or manual testing, not as a full transport simulator.
  • Local implementations can add additional connection rules such as keepalive behavior, TLS, retries, or site-specific acknowledgement expectations, which are outside this wrapper.

Unit handling

  • HL7 Message accepts text values.

Rounding rules

  • Number displays use up to 2 decimal places in the calculator UI.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current hl7-mllp-wrapper calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for MLLP Wrapper.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

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