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In vitro deamination generates ammonia in freshly collected blood specimens. To prevent this, samples for ammonia testing are usually collected on ice and run rapidly (e.g., within 1h). We developed a method to stabilize specimens for ammonia analysis.Following plasma separation, 500μmol/l cycloserine or a combination of 2mmol/l sodium borate with 5mmol/l l-serine were added to sample pools with normal...
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