Medical Laboratory Scientist (MLS) ASCP Practice Exam

Question: 1 / 400

What is the normal pH range for blood gas reference?

7.25-7.35

7.35-7.45

The normal pH range for blood gas reference is established as 7.35 to 7.45. This range is critical for maintaining proper physiological functions in the body. Blood pH is tightly regulated because even slight deviations from this range can lead to significant metabolic disturbances and impact oxygen transport, enzyme activity, and overall cellular function.

A pH below 7.35 indicates acidosis, which means the blood has become too acidic, while a pH above 7.45 indicates alkalosis, suggesting that the blood is too alkaline. Maintaining this narrow range is vital for acid-base homeostasis, which is why it is recognized as the standard reference range in clinical practice related to acid-base balance.

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7.45-7.55

7.55-7.65

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