Creatinine

Specimen requirements

Adult sample type: Serum (gold/yellow top SST)

Paediatric sample type: Plasma (orange top paediatric tube)

Collection requirements: No special requirements

Cost

Price on application

Turnaround time

Please see Turnaround times

Analytical method

Spectrophotometry - Enzymatic - Creatininase and Sarcosine Oxidase

Analysis undertaken at these site(s)

• John Radcliffe Hospital
• Churchill Hospital
• Horton General Hospital

Reference intervals

Children

<2 wks: 29-82 µmol/L
5d-1 yr: 9-32 µmol/L
2-4 yrs: 18-38: µmol/L
5-11 yrs: 27-54 µmol/L
12-14 yrs: 40-72 µmol/L

Males

15-18 yrs: 48-85 µmol/L
>18 yrs 64-104 µmol/L

Females

15-18 yrs: 43-74 µmol/L
>18 yrs: 49-90 µmol/L

N.B. Age, build and pregnancy affect the reference range for plasma creatinine.