Imperial Collage Healthcare

Filter by A-Z

Citrate


Lab Code : CITU (random) CIT24 (24 hour urine collection)


Test Background
Citrate is a key intermediate in the tricarboxylic acid cycle. In urine it forms soluble complexes with cations such as Ca++, Mg++ and Fe++, thus inhibiting urinary crystallisation and stone formation. Low levels of urinary citrate excretion (<1.0 mmol/24 h) may be found in patients with distal renal tubular acidosis, malabsorption syndrome and urinary tract infection.


Clinical Indications
Monitoring therapy for renal stones Identifying decreased urinary citrate as a risk factor for stone formation Investigation of renal tubular acidosis


Reference Range
See report


Sample Required
Random urine sample in universal container or 24 hour urine collection (acidified optional)


Sample Volume
Random urine: 8 mL or 24 hour urine collection


Turnaround Time
Up to 6 weeks


Notes
May be done on the same sample as oxalate. Not currently performed in house; this is a referred test.


Select a test from the list to view more details.