Test ID: THEO
Theophylline, Serum
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Reference Values 
Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
Therapeutic
Children and adults: 8.0-20.0 mcg/mL
Neonatal apnea: 6.0-11.0 mcg/mL
Toxic concentration: > or =20.0 mcg/mL
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