Glycine

gly

Indication(s)

Assessment of one-carbon status.

Specimen, collection and processing

Patient/subject: Prandial status affects concentration, which increases slightly after a protein rich meal..
Matrix: Serum or EDTA plasma. The concentration is about 25 % higher in serum than in plasma.
Volume: Minimum volume is 50 µL, but 200 µL is optimal and allows reanalysis.
Preparation and stability: There is a time-dependent increase in glycine in serum.

Transportation

Frozen, on dry ice. (for general instruction on transportation, click here)

Reported values, interpretation

Reported values: 150-300 µmol/L.
Intraclass correlation coefficient (ICC): 0.81.

Literature

1. Midttun, Ø., McCann, A., Aarseth, O., Krokeide, M., Kvalheim, G., Meyer, K., and Ueland, P.M. (2016). Combined measurement of 6 fat-soluble vitamins and 26 water-soluble functional vitamin markers and amino acids in 50 μL of serum or plasma by high-throughput mass spectrometry. Anal Chem 88, 10427-436.

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