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ketones.fyi

Ketone Level 3.0 mmol/L

The blood level for high ketones is 3.0 mmol/L, which equals 31.2 mg/dL of BHB.

Blood ketones
3.0 mmol/L
Measured in mg/dL
A level of 31.2 mg/dL
Usual urine strip
It is very large
Approximate breath reading
40 ppm or more
Stage
High ketones
Typical fasting hour
approximately hour 80
Negative0 mg/dLTrace5 mg/dLSmall15 mg/dLModerate40 mg/dLLarge80 mg/dLIt is very large160 mg/dL

Meaning of a 3.0 mmol/L reading

A 3.0 mmol/L blood reading indicates high ketones; that amount of BHB in blood is 31.2 mg/dL.

High ketones at 3.0 mmol/L need urgent care if glucose is over 250 mg/dL. Urgent care is also needed with nausea, vomiting or belly pain.

A 3.0 mmol/L result remains a reason to stop fasting and check glucose, even if you have neither diabetes nor symptoms.

During a fast without exercise after a mixed meal, the expected range's midpoint reaches 3.0 mmol/L around hour 80.

For 3.0 mmol/L, the urine strip usually shows its very large pad. A breath meter gives 40 ppm or more, and both results are approximate.

If you have type 1 diabetes, take insulin or an SGLT2 medicine, or are pregnant, report a reading of 3.0 mmol/L to your care team.

Use the reading checker to compare a strip or breath result with 3.0 mmol/L, or to add glucose for the GKI.