# LOINC code for organism identified by mass spectrometry

**URL:** <https://forum.loinc.org/t/loinc-code-for-organism-identified-by-mass-spectrometry/847>\
**Category:** microbiology\
**Created:** [January 23, 2015, 1:47am UTC](https://forum.loinc.org/t/loinc-code-for-organism-identified-by-mass-spectrometry/847 "2015-01-23T01:47:47Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![yanagisawa](https://forum.loinc.org/letter_avatar_proxy/v4/letter/y/54ee81/32.png) [@yanagisawa](https://forum.loinc.org/u/yanagisawa)\
**Post date:** [January 23, 2015, 1:47am UTC](https://forum.loinc.org/t/loinc-code-for-organism-identified-by-mass-spectrometry/847/1 "2015-01-23T01:47:47Z")

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Dear all,  
  
  
  
Does anyone handling test of organism that is identified by mass spectrometry, such as MALDI-TOF?  
  
As my knowledge, there is no exact match of current LOINC code for this method.  
  
The most relevant LOINC code I can find is “41852-5 Microorganism or agent identified in Unspecified specimen”.  
  
Otherwise, we are considering to create local LOINC code Microorganism identified in Unspecified specimen by Mass Spectrometry.  
  
  
  
Welcome for open discussion!  
  
  
  
Thank you.  
  
  
  
Best Regards,  
  
Wai Kin CHEUNG  
  
Health Informatics Standards & Policy  
  
Hong Kong Hospital Authority

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**Author:** ![pjahaas](https://forum.loinc.org/letter_avatar_proxy/v4/letter/p/c6cbf5/32.png) [@pjahaas](https://forum.loinc.org/u/pjahaas)\
**Post date:** [May 6, 2015, 6:39am UTC](https://forum.loinc.org/t/loinc-code-for-organism-identified-by-mass-spectrometry/847/2 "2015-05-06T06:39:08Z")

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We don’t use a separate LOINC for Mass Spec identification. The information value (name of the organism) does not differ between different identification techniques and therefore they have the same LOINC code. The specification of the technique used is in the HL7 message.

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**Author:** ![pdbanning](https://forum.loinc.org/letter_avatar_proxy/v4/letter/p/9f8e36/32.png) [@pdbanning](https://forum.loinc.org/u/pdbanning)\
**Post date:** [June 4, 2015, 1:52pm UTC](https://forum.loinc.org/t/loinc-code-for-organism-identified-by-mass-spectrometry/847/3 "2015-06-04T13:52:21Z")

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Hello,

Please assure your HL7 message has an organism genus/species name as the answer, and search RELMA for MALDI TOF to see 4 possible options.

Please reply if you have further questions,

Have a great day, Pam

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**Author:** ![sieneskil](https://forum.loinc.org/letter_avatar_proxy/v4/letter/s/aca169/32.png) [@sieneskil](https://forum.loinc.org/u/sieneskil)\
**Post date:** [February 21, 2017, 5:16am UTC](https://forum.loinc.org/t/loinc-code-for-organism-identified-by-mass-spectrometry/847/4 "2017-02-21T05:16:04Z")

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Ranking of approximately 2000 common tests performed by laboratories in USA.

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**Author:** ![system](https://forum.loinc.org/uploads/default/original/1X/dbab97ce9b2987d788a376e254fcaae249f3b672.png) [@system](https://forum.loinc.org/u/system)\
**Post date:** [June 23, 2023, 3:36pm UTC](https://forum.loinc.org/t/loinc-code-for-organism-identified-by-mass-spectrometry/847/5 "2023-06-23T15:36:32Z")

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