Urine COAL for diagnosis and monitoring of cystinuria

Description: 
Cystine, ornithine, arginine and lysine analysis by LC-MS/MS for the diagnosis and monitoring of cystinuria.
Clinical details: 
For the diagnosis and monitoring of patients with cystinuria. Renal stone screen.
Related condition or disease: 
Cystinuria, renal stones
Reference range: 

Quantitative report with qualitative comment.

Cystine <11 µmol/mmol creatinine

Ornithine <12 µmol/mmol creatinine

Arginine <13 µmol/mmol creatinine

Lysine <40 µmol/mmol creatinine

Department: 
Reference Services
Location: 
Blackfriars Hub
Sample type and Volume required: 
Random urine (plain universal). Minimum sample volume 0.5 mL urine
Turnaround time: 
2 weeks
Criteria for acceptance / rejections of sample
Contacts:
Inherited Metabolic Diseases Unit at Blackfriars Hub
020 7188 9652
Reference Chemistry, 1st Floor Blackfriars Hub
Friars Bridge Court
Blackfriars Road
London
SE1 8NZ

IMD Duty Biochemist: 07592 502653
For clinical advice or interpretation of results, please contact the laboratory in the first instance.
Laboratory: 
Inherited Metabolic Disease Laboratory at Blackfriars Hub
UAA vs UCOAL leaflet.pdf
PDF (417Kb)

Print as a PDF

Last updated: 30/01/2026