Oxalate/Creatinine Ratio
random oxalate, oxalate
56.34
A random first morning urine (ideally collected prior to eating).
Ascorbic acid (vitamin C) at very high concentrations can interfere. It is recommended that patients refrain from taking excessive amounts of vitamin C or vitamin C rich foods for at least 48 hours prior to urine collection.
Only to be analysed on patients <14 years of age
Add acid immediately, pH
Acidified and Frozen, pH must be <2.
Biochemistry
6 weekly
45 days
Cobas Pro
umol/mmol
| Age | Oxalate/ Creatinine Ratio (umol/mmol) |
| 0-6 months | <280 |
| 6 months - 1 year | <230 |
| 1 - 1.5 Years | <180 |
| 1.5 - 2.5 years | <140 |
| 2.5 - 3.5 years | <125 |
| 3.5 - 4.5 years | <110 |
| 4.5 - 5.5 years | <100 |
| 5.5 - 6.5 years | <90 |
| 6.5 - 15 years | <80 |
| >15 years | <40 |
15%
.
Only to be analysed on patients <14 years of age.
For patients >14 years of age, we require a 24hr urine collected into an acid preservative
5ml
No
OXAU
$OXAU
N/A
