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American Journal of Clinical Nutrition, Vol 52, 758-764, Copyright © 1990 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Taurine concentrations in plasma and whole blood in humans: estimation of error from intra- and interindividual variation and sampling technique

EA Trautwein and KC Hayes
Foster Biomedical Research Laboratory, Brandeis University, Waltham, MA 02254.

The "normal" physiological taurine status in human plasma and whole blood was evaluated for day-to-day variation. Because plasma taurine concentrations can vary by greater than or equal to 100% because of sampling and analytical techniques, various blood-collecting and - handling procedures were compared to ascertain the most reliable method for measuring plasma taurine. Blood collection into EDTA-wetted plastic syringes at room temperature proved most reliable. Plasma and whole- blood taurine concentrations were determined in the same 13 women and 11 men three times within a 10-d period. The normal plasma taurine concentration was 44 +/- 9 mumol/L (mean +/- SD; n = 40) in fasting subjects and 42 +/- 7 mumol/L (n = 30) in semi-fasted individuals, with an intraindividual variation of 9 +/- 5%. Whole-blood taurine concentrations ranged from 164 to 318 mumol/L and had an intraindividual variation of 11 +/- 5%. Inter-individual variation averaged 12 +/- 7% for plasma and 7 +/- 6% for whole blood taurine. Because plasma and whole-blood taurine concentrations were not correlated, assessment of both would provide the most accurate estimate of taurine status. Short of that, whole-blood taurine would appear to be the best single measure.


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J. Hillenkamp, A. A. Hussain, T. L. Jackson, J. R. Cunningham, and J. Marshall
Taurine Uptake by Human Retinal Pigment Epithelium: Implications for the Transport of Small Solutes between the Choroid and the Outer Retina
Invest. Ophthalmol. Vis. Sci., December 1, 2004; 45(12): 4529 - 4534.
[Abstract] [Full Text] [PDF]

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J. Hillenkamp, A. A. Hussain, T. L. Jackson, P. A. Constable, J. R. Cunningham, and J. Marshall
Compartmental Analysis of Taurine Transport to the Outer Retina in the Bovine Eye
Invest. Ophthalmol. Vis. Sci., November 1, 2004; 45(11): 4099 - 4105.
[Abstract] [Full Text] [PDF]


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