In pregnant women who don’t have diabetes, blood traits like hemoglobin and hematocrit can slightly predict their average blood sugar levels — but other traits like MCHC and PDW don’t hold up when we adjust for other factors.

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Pro

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Evidence from Studies

Supporting (1)

37

Community contributions welcome

37

Glycated hemoglobin and red blood cell indices in non-diabetic pregnant women

Cross-Sectional Study

Human

2017 Sep 15

The study looked at blood markers in pregnant women without diabetes and found that hemoglobin and hematocrit levels can weakly but significantly predict HbA1c, just like the claim says. Other markers like MCHC and PDW didn’t hold up after adjusting for other factors.

Contradicting (0)

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No contradicting evidence found

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Glycated hemoglobin and red blood cell indices in non-diabetic pregnant women

Score: 37

DOI: 10.4081/cp.2017.999

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In pregnant women without diabetes, having more red blood cells might make their blood sugar test results look higher than they really are, even if their actual sugar levels are normal.

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In pregnant women who don’t have diabetes, having denser hemoglobin in their red blood cells might be linked to slightly higher blood sugar levels over time.

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In pregnant women without diabetes, having more hemoglobin in the blood is linked to slightly higher HbA1c levels — a marker usually tied to blood sugar — suggesting that blood cell levels might affect this test even if sugar isn't high.

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In pregnant women who don’t have diabetes, things like red blood cell size and volume don’t seem to affect their HbA1c blood test results in any meaningful way.

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