Glucose & thyroid · FRU
Fructosamine (FRU)
Helps assess sustained versus brief stress-related high glucose; not measured in the supplied extracts.
This site does not list fixed normal values: reference ranges differ by analyzer and method, so always use the range printed on your report.
Related clinical questions
Reflects glucose over time rather than at collection, supporting diabetes assessment and follow-up.
Why this marker matters
Roughly represents the past two weeks and is less affected by brief stress, but hides daily highs and lows.
Interpretation limits
Low protein or hyperthyroidism may affect interpretation. A normal result does not replace a full assessment.
Tests to read alongside it
Symptoms, repeat glucose or curves, urine glucose and indicated ketones, alongside protein and thyroid findings.
Questions at follow-up
Ask whether FRU adds useful information and how to monitor. Never change insulin doses from an average alone.
Practise with real reports →
Three clinics and three cats: how kidney markers, glucose, pancreatic lipase and blood counts inform clinical questions.
Want to track this over time? Try Chronlo
Chronlo can import blood test reports from a photo and chart how each value changes over time, making follow-ups with your vet easier.
Related guides
Sources:
This site is for general reference only and is not a substitute for veterinary diagnosis. If your cat shows unusual signs, please see a vet promptly.