Sleep apnea laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Saarah T. Alkhairy, M.D.

Overview

Laboratory tests are not used in the diagnosis of sleep apnea. Occasionally evidence of anemia, polycythemia, proteinuria, hypercapnia, or low T4 may be found.

Sleep Apnea Laboratory findings

• Laboratory tests are not used in the diagnosis of sleep apnea
• The following lab abnormalities may be occasionally found:

• Blood tests may show anemia or polycythemia (hypoxemia)
• Urine analysis may show proteinuria (renal disease)
• Arterial blood gas analysis (ABG) may show hypercapnia (respiratory failure)
• Thyroid function tests may show low T4 (hypothyroidism)