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Lab marker Histidin with reference ranges
Reference range
30–100 µmol/L (laborabhängig)
Histidin should not be read as an isolated number only. This short overview summarizes when the marker matters, which questions it does not answer on its own, and what broader context makes the result more useful.
Relevance
Histidin is most useful when it is interpreted together with the symptom pattern, the relevant category context, and the broader diagnostic question behind the test.
Limits
Histidin does not replace symptom timing, functional assessment, or the wider clinical picture. A marker may be informative without being the whole answer.
Next context
The next useful step is usually to connect Histidin to related markers, symptoms, and the broader context of the test rather than reading it as an isolated endpoint.
Document and understand your lab values in relation to your symptoms.

This biomarker gains value when it is connected to symptom patterns, daily function, and structured self-observation instead of being read in isolation.
ME/CFS
Reduced capacity, multisystem symptoms, and delayed worsening often make more sense when the broader ME/CFS pattern is considered.
Pacing
Markers linked to sleep, stress, recovery, hormones, or metabolism often become more useful when viewed through pacing and daily load management.
Questionnaires
Questionnaires help connect biomarkers to symptom patterns, functional limits, and patient-reported change over time.
Histidin is most useful when it is interpreted together with the symptom pattern, the relevant category context, and the broader diagnostic question behind the test.
Histidin does not replace symptom timing, functional assessment, or the wider clinical picture. A marker may be informative without being the whole answer.
The next useful step is usually to connect Histidin to related markers, symptoms, and the broader context of the test rather than reading it as an isolated endpoint.
from category Proteine und Aminosäuren
Ref: 35 - 52
Ref: <20
Ref: 55.1-67.0
Ref: 5 - 15
Ref: 0.9-2
Ref: 2.1 - 3.8
Category pages help structure biomarkers, but users often need a symptom-first path to understand why a marker matters.
Questionnaires
Use structured assessments to complement what a biomarker category can tell you.
ME/CFS
The broader pattern often matters more than a single lab bucket.
Lab markers
Compare this category with other marker groups and adjacent contexts.