Test/Investigation
Theophylline
Site(s) or Laboratory offering Test/Investigation
NNUH
Units
mg/L
Comments/Precautions
Assayed to check compliance and therapeutic levels.
Sample type
Serum
Turnaround times (TAT) Urgent/Routine/GP or OPD
1 hour / 4 hour / by 8am next day
Reference intervals (adult unless stated)
10 – 20 mg/L
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