Synonym(s):
3 mL plain blood. Protect from light.
Spectrophotometry
0 – 1 day: < 86 µmol/L 1 – 2 days: < 122 µmol/L 3 – 5 days: < 175 µmol/L 6 days – 12 yrs: 7 - 32 µmol/L 13 – 17 yrs: 7 - 32 µmol/L ≥ 18 yrs: 7 - 32 µmol/L
Mean = 4 hrs, Range: 3 – 5 hrs
Daily, 24 hrs STAT
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