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Theophylline
Blood

Theophylline

Also known as: Aminophylline Level, Theo Level
COMMON RANGE
8 – 20
µg/mL
6.8
21.2
M
Mayo Clinic Laboratories
Adult
↗
See all sources ↓
CONVERT & COMPARE
µg/mL
=
77.7
µmol/L
=
14
mcg/mL
=
14
ug/mL
=
77.7
umol/L
=
77.7
mcmol/L

Reference ranges by source

Published adult intervals: 2, from 2 named sources, shown in µg/mL.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
M
Mayo Clinic Laboratories
All
≥18y
8 – 20 µg/mL
L
Labcorp
All
≥18y
10 – 20 µg/mL
M
Mayo Clinic Laboratories
All · ≥18y
↗
8 – 20 µg/mL
L
Labcorp
All · ≥18y
↗
10 – 20 µg/mL

Sources

Last updated 2026-05-02
This page presents source-specific reference data and sourced explanations. For general wellness information only. This is not medical advice. For diagnosis or treatment of any condition, talk to a qualified clinician.
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