A modified amino acid that is a building block of collagen.
Hydroxylysine is a modified form of the amino acid lysine, made after lysine is built into collagen, the main structural protein in skin, bone and connective tissue. Free hydroxylysine in plasma comes mostly from collagen turnover.
Hydroxylysine is reported as part of a full amino acid profile. It sits at very low levels in healthy adults. Unusual results are uncommon and usually relate to rare inherited disorders of collagen processing, so it is read in the context of the whole profile.
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) |
|---|---|
| Hydroxylysine | 0 to 2 |
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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