Oxalic acid
| Material: | 20 ml of a 24 h urine collected with 5-10 ml acetic acid. Please state 24 h urine volume. 1 ml serum The day before sample collection it is recommended that the patient doesn´t consume oxalic acid-rich food such as spinach, beetroot, rhubarb and vitamin C. | Reference range | Urine: < 40 mg/24 Std. Serum: 0,8-2,4 µg/ml |
| Indication | Differential diagnosis of nephrolithiasis |
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