Children's Mercy Kansas City
Glycine Level, CSF

CMH Lab Section
Biochemical Genetics

Clinical Description
CSF Glycine is elevated in nonketotic hyperglycinemia and

Specimen Requirements
1 mL CSF, non-traumatic tap

Testing is completed daily Monday-Friday
Reports with interpretations are released Fridays

Turn Around Time
3-10 days
Specimens must be received in the lab by 1400 Thursday afternoon to be reported on Friday

Special Instructions
Orders for CSF should be accompanied by a blood specimen to facilitate interpretation
Glycine Level

Fasting Collection
Except for emergent or critically ill children, the patient must be fasting as follows:
ages 0-6 months: 3 hours
ages 7-24 months: 6 hours
ages > 24 months: 8-12 hours

Ion Exchange Chromatography

See interpretative report

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