3 mL plain blood. Do not take sample as soon as patient arrives. Allow for a period of rest. Take sample at 0800h or 2400h.
Immunoassay
≥ 13 yrs :8am: 123 - 626 nmol/L 12mn: 46 - 389 nmol/L
Mean = 4 hrs, Range: 3 – 5 hrs
Daily
08 Apr 2020 8:15 AM
Reference Interval is updated on 08 Apr 2020.
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