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Galactose-1-Phosphate

Published: July 27, 2026Updated: August 25, 2026

Galactose-1-phosphate measures the concentration of a phosphorylated form of galactose in the blood, which is crucial for diagnosing galactosemia.

Quick summary

Galactose-1-phosphate levels help diagnose galactosemia.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

Units
mg/dL
Clinical utility
diagnostic
Result kind
quantitative
FDA-cleared
FDA Cleared General Assay
interpretation: {"text":"0–3 mg/dL: Galactose-1-phosphate levels within this range are considered normal.","label":"Normal"}; {"text":">3 mg/dL: Levels above 3 mg/dL may indicate galactosemia and require further investigation.","label":"Elevated"}

Galactose-1-phosphate is a biomarker used to assess the concentration of galactose-1-phosphate in the blood, which is essential for diagnosing galactosemia, a rare genetic disorder that affects the body's ability to process galactose.

Elevated levels of galactose-1-phosphate can indicate galactosemia, which, if untreated, can lead to serious health complications such as liver damage, cataracts, and intellectual disabilities.

Monitoring galactose-1-phosphate levels is crucial for managing galactosemia, as dietary adjustments and medical interventions can help mitigate the risks associated with high levels of this biomarker.

Frequently asked questions

What is the normal range for galactose-1-phosphate?
The normal range for galactose-1-phosphate is 0–3 mg/dL.
What does an elevated level of galactose-1-phosphate indicate?
Elevated levels of galactose-1-phosphate may indicate galactosemia, a genetic disorder that affects galactose metabolism.
  1. 1
    Galactosemia - Genetics Home Reference - NIHSource
  2. 2
    Galactose-1-phosphate uridylyltransferase deficiency - MedlinePlusSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy