Pathology

Test & Collection Guide

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Creatinine - Blood

Alternate names:

Cr, Creat

Laboratory:

Biochemistry

Test Code:

Specimen types:

Serum

Container types:

Serum tube with gel

Collection Instructions:

Transport specimen at Room Temperature to lab
Sample haemolysis may make this test unreportable

Minimum Adult Volume:

1 mL

Paediatric Minimum Volume:

0.5 mL

Frequency:

Daily

Result Turnaround Time:

4 hours

Reference Interval:

0 to 1 W 22 - 93 umol/L

1W to 4W 17 - 50 umol/L

4W to 2Y 11 - 36 umol/L

2Y to 6Y 20 - 44 umol/L

6Y to 12Y 27-58 umol/L

12Y to 15Y Female 35-74 umol/L

12Y to 15Y Male 35-83 umol/L

15Y to 19Y Female 38-82 umol/L

15Y to 19Y Male 50-100 umol/L

19Y to 120Y Female 45 - 90 umol/L

19Y to 120Y Male 60 - 110 umol/L

Laboratory Use Only

Storage Instructions:

Falsely rasied creatinine values may be obtained in therapy with ascorbic acid and in the presence of ketones, alpha-methyldopa, haemolysis or high glucose concentrations

Cephalosporins in high concentration also give falsely raised serum creatinine

Blood samples for creatinine should not be taken within one hour of i.v. Cephalosporin administration