Branched chain amino acids - valine, leucine, isoleucine and alloisoleucine

Description: 
Tandem mass spectrometric analysis
Clinical details: 
For monitoring patients with known inherited metabolic disease, specifically maple syrup urine disease. This test is indicated in the routine monitoring of MSUD patients and also for close monitoring during periods of acute decompensation.
Related condition or disease: 
Maple syrup urine disease
Reference range: 

Please contact laboratory to discuss

Synonyms or keywords: 
BCAA, Valine, Leucine, Isoleucine, Alloisoleucine, Metabolic
Units: 
umol/L
Department: 
Biochemical Sciences Department
Location: 
Blackfriars Hub
Sample type and Volume required: 
Bloodspot card. Two > 7 mm diameter spots
Call in advance: 
Discuss with laboratory to arrange urgent analysis
Turnaround time: 
Same day
Special sample instructions: 

Please include clinical details with the request form for appropriate interpretation of the results

Criteria for acceptance / rejections of sample
Storage and transport: 
Send via first class post
Contacts:
Inherited Metabolic Diseases Unit at Blackfriars Hub
07592 502653
Reference Chemistry, 1st Floor Blackfriars Hub
Friars Bridge Court
Blackfriars Road
London
SE1 8NZ
For clinical advice or interpretation of results, please contact the laboratory in the first instance.
Laboratory: 
Reference Chemistry at the Blackfriar's Hub

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Last updated: 08/10/2025