Galactomannan Antigen

Diagnostic Use

Galactomannan (GMAG) is a component of the Aspergillus cell wall that can be detected in the tissues and fluids (typically serum and bronchial washings) of patients with invasive aspergillosis (IA).

Department

Microbiology - Serology

Delphic Registration Code

GMAG

Laboratory Handling

Laboratory

Sample must be frozen post 48 hrs of collecton.

Turnaround Time

3 days

Specimen Type

• Serum
• Bronchial Washing

Specimen Requirements

Tube/Container Type:

Preferred

• Serum (Red Cap)

Preferred if West Coast

• SST II (Gold Cap)

Acceptable

• Pottle
• SST II (Gold Cap)

Preferred Sample Volume (ml)

10.0

Minimum Sample Volume (ml)

5.0

No of Samples Required

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• Serum (Red Cap)

Acceptable

• Serum (Red Cap)
• SST II (Gold Cap)

Preferred Sample Volume (ml)

5.0

Minimum Sample Volume (ml)

3

Additional Specimen Information

Minimum volume of 1 mL of serum or bronchial washings required for the test

Aliquot Instructions

Sample Type

• Serum

Minimum Volume (ml)

1.0

Transport to Lab

Ambient (8 - 24 degrees Celsius)
Chilled (2 - 8 degrees Celsius)
If overnight - Frozen

Additional Referral/Aliquot Information

Minimum volume of 1 mL of serum or bronchial washings.
Sample must be frozen post 48 hours of collection.

Interpretation

Two consecutive Positive results in the context of appropriate clinical features suggests possible Invasive Aspergillosis.

Reference Intervals

Results expressed as an index:

<0.16 Negative

0.16-0.20 Equivocal

>0.20 Positive

Test Method

CLIA

Non-Funded Test Cost

$53.00 (Exclusive of GST)

Billing Code

6273

Contact Information

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