血中β-ヒドロキシ酪酸測定における溶血、黄疸、および高脂血症干渉限界値
Mark A Cervinski1,2, Macey J Smith2, Gracie Forgues2
1Department of Pathology and Laboratory Medicine, The Geisel School of Medicine at Dartmouth, One Medical Center Dr., Lebanon, NH, United States.
The journal of applied laboratory medicine
|February 5, 2026
まとめ
本研究では、Roche cobas分析装置におけるStanbio β-ヒドロキシ酪酸(BOHB)アッセイの干渉限界値を決定しました。溶血、黄疸、高脂血症に対する更新された限界値は、不必要な検体キャンセルを減らし、分析装置モデルの違いを考慮します。
科学分野:
- 臨床化学;検査医学;分析生化学
背景:
- β-ヒドロキシ酪酸(BOHB)の測定は、代謝性アシドーシスの評価に不可欠です。;Stanbio β-ヒドロキシ酪酸LiquiColor試薬は、BOHB分析に一般的に使用されています。;アッセイの信頼性のために、溶血、黄疸、および高脂血症による干渉を評価することが不可欠です。
研究 の 目的:
- Stanbio BOHBアッセイの溶血、黄疸、および高脂血症による干渉限界値を評価すること。;3つの異なるRoche cobas分析装置モデルにおけるアッセイ性能を評価すること。;BOHB測定のための、更新された臨床的に関連性のある干渉限界値を設定すること。
主な方法:
- BOHB濃度(0.20、3.00、7.00 mmol/L)が異なる患者検体プールを作成しました。;検体プールに、溶血物、ビリルビン、またはIntralipid®を増加量添加しました。;干渉とBOHB濃度を、Roche cobas c502、c501、およびc311分析装置で3回測定しました。
主要な成果:
- 溶血指数400(BOHB ≤1.00 mmol/L)または1010(BOHB >1.00 mmol/L)まで、溶血による干渉は許容されました。;黄疸指数25(ビリルビン25 mg/dL)まで、全ての試験BOHB濃度において黄疸による干渉は観察されませんでした。;脂血指数800の限界値は、保守的なデータに基づいて設定されました。
結論:
- Stanbio BOHBアッセイの干渉限界値が更新され、不必要な検体キャンセルが削減されました。;干渉は異なるRoche cobas分析装置モデル間で異なり、モデル固有の検証の重要性が強調されました。;これらの結果により、臨床検査室における許容可能な検体品質限界をより良く定義できます。
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