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HelpTest Code LAB6742 Glutaric Acid
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)
Test Components
Glutaric Acid
3- Hydroxyglutaric Acid
Reference Range
Glutaric Acid0.0-249.0 ng/mL
3- Hydroxglutaric Acid
0.0-64.0 ng/mL
TAT
10 days
Sample Stability
Refrigerated: 24 hours
Frozen @-20 Celsius: 30 days
Frozen @ -80 Celsius: Indefinitely
Aliases
Pentanedioic Acid
Glutarate
CPT
82542
Test/Batch Schedule
Run once a week (day varies)