The main purpose of this Manual is to provide useful guidelines for the selection of pathology tests and to facilitate interpretation of results.
Contains a comprehensive listing of all genes from the Human Gene Nomenclature Committee (HGNC) database alongside laboratories and tests available in the country.
A manual for the process of macroscopic dissection in Anatomical Pathology laboratories.
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Keywords: Urine creatinine
Random, 24 h or timed urine collection.
For 24 h or timed collections, the starting and finishing time must be stated, to the nearest minute, on the specimen container.
Random urine collection is dependent on rate of urine flow.
24 h collection depends on age, gender, muscle mass, and amount of meat in diet:
Child: 0.07-0.19 mmol/24h/kg
Adult female: 5-16 mmol/24 h
Adult male: 9-18 mmol/24 h
Urine creatinine is of no diagnostic value in its own right. It is measured in the following circumstances:
1. As a guide to the completeness of a 24 h urine collection.
2. With another urine analyte to calculate the analyte/creatinine ratio. This corrects for variability in urine dilution (random urine specimen) or compensates for an incomplete 24 h urine collection.
3. With plasma Creatinine and another analyte present in both plasma and serum, to calculate a fractional excretion rate of that analyte (eg, Sodium).
4. With plasma creatinine, to estimate plasma Creatinine clearance.
5. With testing for illicit drugs.
See Creatinine clearance.
Pasternack A and Kuhlback B. Scand J Clin Lab Invest 1971; 27: 1-7.
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The RCPA is the leading organisation representing Pathologists and Senior Scientists in Australasia.
Its mission is to train and support pathologists and senior scientists and to improve the use of pathology testing to achieve better healthcare.
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