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Test Code 24CCTP Creatinine Clearance and Protein, urine

Specimen Requirements

Specimen Type 1: Serum/Plasma
Container/Tube: Gold Top (SSTII) / Green Top (Li Heparin)
Volume:  5.0 mL / 4.5 mL
Minimum Volume: 0.5 mL

 

Specimen Type 2: 24 hr urine
Container/Tube: The following types of 24 hr urine containers are acceptable:

  • No preservatives
  • 3.0 g Thymol

Volume:  4000.0 mL
Minimum Volume: 20.0 mL

 

Collection Instructions: Send urine and serum/plasma samples together to laboratory.

 

Please refer to NUH's Urine Preservative Guide

Specimen Stability

Specimen Type Serum/Plasma
Ambient 7 days
Refrigerate 7 days
Frozen 3 months

 

Specimen Type 24 hr urine
Ambient 24 hours
Refrigerate 7 days
Frozen 1 month

Specimen Condition

Haemolysis Not applicable
Icterus Not applicable
Lipaemia Not applicable
Others Not applicable

Methodology

Creatinine, serum Enzymatic Assay
Creatinine, urine Enzymatic Assay
Total Protein, urine Turbidimetry

Days and Times Performed

24 hrs, TAT 1 day

Reference Interval

Creatinine, urine, 24 hrs

Male 7.7 – 21.3 mmol/day
Female 5.9 – 14.1 mmol/day

 

Creatinine clearance (CCT): 
Normal > 70 mL/min in a young adult. Typically falling approximately 0.5 mL/min per year at ages over 30 years. 
  
Reference: RCPA Manual

(https://www.rcpa.edu.au/Manuals/RCPA-Manual/Pathology-Tests/C/Creatinine-clearance) 
 

Total protein

< 0.30 g/day

Testing Laboratory

National University Hospital

Clinical Chemistry, 67724346

Useful For

Evaluation of renal disease.

Estimation of glomerular filtration rate.

Screening for monoclonal gammopathy.

Service Code

31151

Update

Last updated 11/03/2025

Panel Information

Panel includes the following tests:

LOINC Code Information

Urine volume, total 3167-4
Creatinine, urine 14683-7
Creatinine, urine, 24 hr 14684-5
Creatinine clearance 2164-2
Total protein, urine 2888-6
Total protein, urine, 24 hr 2889-4

Laboratory Code

LAB3053066