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Clinical Laboratory Test:
serum — hemoglobin

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Description

The clinical test hemoglobin (Hb) is a measure of the amount of hemoglobin in a patient's plasma. It is typically obtained through a blood sample. The sample is collected by a healthcare professional using a needle and syringe. The sample is then sent to a laboratory for analysis. The laboratory will measure the amount of hemoglobin in the sample using a spectrophotometer. This instrument measures the amount of light absorbed by the hemoglobin molecules in the sample. The results are then reported as a numerical value, usually in grams per deciliter (g/dL). The normal range for hemoglobin is typically between 12 and 16 g/dL.

Synonyms
  • free Hb
  • free hemoglobin
  • free Hgb
  • Hb
  • Hgb
Other Sample Sources for This Test
Some Diseases Associated with an Abnormal Hemoglobin
Detailed Laboratory Testing Information (use the custom search buttons below to find details on these topics)

All of the following must be considered when interpreting clinical findings and are too extensive to be covered on this site: