Lab marker · Low

Low 5'-nucleotidase: what it means

A 5'-nucleotidase result below the normal range is considered low. Here is what a reduced 5'-nucleotidase can point to, and when it is worth discussing with a doctor.

Reference range: ~2–15 U/L; a liver-specific enzyme used to confirm that a raised alkaline phosphatase is coming from the liver (cholestasis) rather than from bone

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What a low 5'-nucleotidase can mean

  • Normal — the expected result; and importantly, a normal 5'-nucleotidase with a high ALP points the source toward bone rather than the liver.
  • A low value has no clinical significance.

When to discuss with a doctor

5'-nucleotidase is a specialist confirmatory test, not a routine one. Its value appears in a specific situation: when the alkaline phosphatase is raised and it is not clear whether the source is the liver or the bone. A high 5'-nucleotidase confirms a liver or bile-duct (cholestatic) cause and directs the work-up toward the biliary system — often with liver imaging to look for an obstruction. A normal result with a high ALP points instead toward a bone source. It is interpreted alongside the other liver enzymes and GGT. Mediora.AI shows 5'-nucleotidase together with alkaline phosphatase, GGT and bilirubin so the liver-versus-bone question is answered in context; the interpretation and any further tests belong with your doctor.

How to raise a low 5'-nucleotidase

A low 5'-nucleotidase is not raised by diet or habits. It reflects something else going on, so what actually helps is finding that cause with a doctor - the value follows once the cause is addressed.

General information, not a treatment plan - decisions about medication or target values belong with your doctor.

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Mediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.