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Phenobarbital

Blood

Phenobarbital

Also known as: Luminal Level, Phenobarb

COMMON RANGE

10 – 40

µg/mL

7

43

M

Mayo Clinic Laboratories

Adult

See all sources ↓

CONVERT & COMPARE

µg/mL

=

108

µmol/L

=

25

mcg/mL

=

25

ug/mL

=

108

umol/L

=

108

mcmol/L

Reference ranges by source

Published adult intervals: 4, from 4 named sources, shown in µg/mL.

SOURCE

SEX

AGE

RANGE

VISUAL

CITE

A

ARUP Laboratories

All

≥18y

15 – 40 µg/mL

M

Mayo Clinic Laboratories

All

≥18y

10 – 40 µg/mL

L

Labcorp

All

≥18y

15 – 40 µg/mL

Q

Quest Diagnostics

All

≥18y

15 – 40 µg/mL

A

ARUP Laboratories

All · ≥18y

15 – 40 µg/mL

M

Mayo Clinic Laboratories

All · ≥18y

10 – 40 µg/mL

L

Labcorp

All · ≥18y

15 – 40 µg/mL

Q

Quest Diagnostics

All · ≥18y

15 – 40 µg/mL

Related biomarkers

More tests in the blood category.

White Blood Cells (WBC)

Red Blood Cells (RBC)

Hemoglobin (Hgb)

Hematocrit (Hct)

Platelets (PLT)

Mean Corpuscular Volume (MCV)

Sources

ARUP Laboratories

Mayo Clinic Laboratories

Quest Diagnostics

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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