An essential amino acid and precursor to histamine.
Histidine is an essential amino acid, which means your body cannot make it and you have to get it from food. It is a building block for proteins and a precursor of histamine, a molecule involved in immune responses, stomach acid release and nerve signalling. Histidine also helps form carnosine in muscle.
Measuring plasma histidine is part of a full amino acid profile that screens how well your body takes in and processes protein. Low levels can reflect poor intake, certain inflammatory states or pregnancy, while high levels are uncommon and usually relate to inherited metabolic conditions. The number is most useful read alongside the other amino acids rather than on its own.
Aniva reads your result against research-backed ranges, not just the lab's wide normal. The reference shown below is specific to this biomarker.
Adult fasting plasma, guidance only:
| Analyte | Typical adult range (µmol/L) |
|---|---|
| Histidine | 50 to 106 |
Ranges vary by laboratory and assay and are read as part of the full amino acid profile.
Results are affected by recent diet, recent protein intake, fasting state and the time of day the sample is taken.
Read as part of the full plasma amino acid profile.
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