Haemoglobin: units, conversion and tracking
Updated
Short answer
Haemoglobin is reported in g/dL, g/L and mmol/L. 1 g/L = 0.1 g/dL. mmol/L is not converted, because there is no reliable factor.
Convert haemoglobin
Enter a value to see the converted result.
Converts units only and does not interpret a result. For other markers, use the full unit converter.
What is haemoglobin?
The oxygen-carrying protein in red blood cells.
BiomarkerHQ groups haemoglobin under Blood count. On lab reports it can also appear as hemoglobin, hb, hgb, haemoglobin total and hemoglobin total.
Haemoglobin units and conversion
BiomarkerHQ stores each haemoglobin result in the unit printed on the report, and charts and compares results in g/dL.
1 g/L = 0.1 g/dL
1 g/dL = 10 g/L
| g/L | g/dL |
|---|---|
| 100 g/L | 10 g/dL |
| 110 g/L | 11 g/dL |
| 120 g/L | 12 g/dL |
| 130 g/L | 13 g/dL |
| 140 g/L | 14 g/dL |
| 150 g/L | 15 g/dL |
| 160 g/L | 16 g/dL |
| g/dL | g/L |
|---|---|
| 10 g/dL | 100 g/L |
| 11 g/dL | 110 g/L |
| 12 g/dL | 120 g/L |
| 13 g/dL | 130 g/L |
| 14 g/dL | 140 g/L |
| 15 g/dL | 150 g/L |
| 16 g/dL | 160 g/L |
Labs also print haemoglobin in mmol/L. There is no reliable conversion between that unit and g/dL and g/L, so it is not converted. Keep the unit printed on the report.
For another value, use the lab unit converter. It converts units only and does not interpret a result.
Before comparing haemoglobin results
Tracking haemoglobin over time
In BiomarkerHQ, each haemoglobin result is saved with its collection date, its unit and the reference range printed on that report. The timeline charts the results across your draws against the range from each of your own reports, and any two draws can be compared side by side.
- Keep the unit printed on each report. Convert only to compare.
- Keep each report's own range with its result. See why ranges differ between labs.
- Compare the same lab and conditions where you can. See how to compare two blood tests.
Frequently asked questions
Which units do labs report haemoglobin in?
Haemoglobin is reported in g/dL, g/L and mmol/L. BiomarkerHQ stores each result in the unit printed on the report and uses g/dL for charts and comparisons.
How do I convert haemoglobin from g/L to g/dL?
1 g/L = 0.1 g/dL. For example, 130 g/L is 13 g/dL.
How do I convert haemoglobin from g/dL to g/L?
1 g/dL = 10 g/L. For example, 13 g/dL is 130 g/L.
Can haemoglobin be converted from mmol/L?
No. mmol/L is not converted, because there is no reliable factor. Keep the unit printed on each report, and compare results from the same lab and method.
What should I check before comparing haemoglobin results?
Haemoglobin in mmol/L is not converted because labs use different molar bases.
Does BiomarkerHQ interpret my haemoglobin result?
No. It compares a result only with the reference range printed on your own lab report, as below, within or above, and does not say what the result means. Talk to a qualified clinician about your results.
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