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Test Code LAB6742 Glutaric Acid

Aliases

Glutaric

Performing Section

Biochemical Genetics

Purpose/Principle

Glutaric acidemia type I and glutaric acidemia type II are characterized by the accumulation and excretion of glutaric acid. This method measures the amount of glutaric acid present using stable isotope dilution methodology

Specimen Type

Serum or Plasma:
Green Top -Lithium Heparin (Preferred)
Dark Green Top – Sodium Heparin
Red Top -Plain
Gold Top -SST

Specimen Volume

Preferred: 3.0 mL (1.5 mL serum/plasma)
Minimum: 1.5 mL (0.5 mL serum/plasma)

Processing Instructions

Green or Gold top-CENTRIFUGE per procedure / Red Top – Clot 60 minutes in upright position
Pipette off plasma or serum into pour off tube
Attach original tube to pour off tube with rubber band
Store and ship sample Frozen on dry ice.

Temperature

Frozen (dry ice)

TAT

10 days

Test Components

Glutaric Acid
3- Hydroxyglutaric Acid

CPT

82542

Sample Stability

Refrigerated: 24 hours
Frozen @-20 Celsius: 30 days
Frozen @ -80 Celsius: Indefinitely

Test/Batch Schedule

Run once a week (day varies)

Reference Range

Glutaric Acid

0.0-249.0 ng/mL

 

3- Hydroxglutaric Acid

0.0-64.0 ng/mL