Monday - Friday, 0800 - 1700.
2 - 3 days.
0.5 mL (at least 1.0 mL preferred).
Centrifuge and separate from cells as soon as possible. Freeze immediately.
Interpretive Reference Range:
Concentration < 2.5 mM: Not toxic.
Concentration > 3 mM: Toxicity likely.
Concentration > 6 mM: Possibly severe, life-threatening toxicity.
Evaluation of benzoic acid toxicity in hyperamonemia and non-ketotic hyperglycinemia.
Stable isotope dilution gas chromatography-mass spectrometry (GC/MS).