Use Rule Of Three Hct when you need to approximate hematocrit from hemoglobin with the rule of three: each g/dL of hemoglobin contributes about three percent hematocrit. Enter Hemoglobin using the definitions and units below so the result can be reproduced.

Hemoglobin

A finite measured or assumed value, expressed in g/dL.

The published tool contract uses this rule: Approximate hematocrit from hemoglobin with the rule of three: each g/dL of hemoglobin contributes about three percent hematocrit.

Hematocrit

The calculated hematocrit in %.

The calculation does not propagate measurement uncertainty, sampling error, or biological and chemical variability. It is informational and cannot diagnose a condition, select treatment, or replace professional interpretation of the original measurements.

Retain the original Hemoglobin values and their units alongside the result. Hemoglobin From Hct Proxy is useful when you instead need to approximate hemoglobin in g/dL from hematocrit percent with the clinical rule of three: hemoglobin is about one third of hematocrit. This screening proxy can be unreliable when red-cell size or hemoglobinization is abnormal. Hematocrit % provides another view by helping you compute hematocrit percent as the red cell volume divided by the total blood sample volume times 100.

• Hemoglobin From Hct Proxy

  Approximate hemoglobin in g/dL from hematocrit percent with the clinical rule of three: hemoglobin is about one third of hematocrit. This screening proxy can be unreliable when red-cell size or hemoglobinization is abnormal.

• Hematocrit %

  Compute hematocrit percent as the red cell volume divided by the total blood sample volume times 100.

• HbA1c Category Lookup

  Classify a hemoglobin A1c percentage as normal below 5.7 percent, prediabetes below 6.5 percent, or diabetes otherwise.