Methadone, Plasma/Serum (Biodone, Methaforte, Pallidone)

Department

Toxicology

Delphic Registration Code

PMET

Synonyms

Biodone

Turnaround Time

72 hours

Test Code

4820

Specimen Type

• Serum
• Plasma

Specimen Requirements

Tube/Container Type:

Preferred

• Lithium Heparin - Non-gel (Green Cap)

Acceptable

• Serum (Red Cap)

Preferred Sample Volume (ml)

5.0

No of Samples Required

1

Additional Specimen Information

Do NOT use gel tubes for this analysis
Specimens should be collected immediately pre-dose and/or 2.5-4 hours post dose.

Aliquot Instructions

Sample Type

• Serum
• Plasma

Minimum Volume (ml)

1.0

Transport to Lab

Chilled (2 - 8 degrees Celsius)
If overnight - Chilled (2 - 8 degrees Celsius)

Interpretation

The standard half-life of methadone is 30 hours, with time to steady-state of 7 days.

Reference Intervals

650 – 1950 nmol/L

Test Method

LCMS

Non-Funded Test Cost

$29.94 (Exclusive of GST)

Billing Code

4820

Specimens should be collected immediately pre-dose and/or 2.5-4 hours post dose.

Contact Information

Enquiry Form