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Hemoglobin

Item Value
Clinical Questions Is my patient actively hemolyzing his/her own or transfused RBCs?
Approval req'd? No
Available Stat? Yes
Test code HGB, CBC, CBCD, LBGH
Performed by Parnassus & Mt. Zion Hematology
In House Availability Test available 24 hours per day 7 days per week
Method Spectrophotometry
Container type Lavender top
Amount to Collect 1 mL blood
Sample type EDTA whole blood
Preferred volume 1 mL blood
Min. Volume 250 uL (microtainer)
Units g/dL
Normal range
0-7 days 14.5-22.5 g/dL
8-14 days 13.5-21.5 g/dL
2-4 weeks 12.5-20.5 g/dL
1-2 months 10.0-18.0 g/dL
2-3 months 9.0-14.0 g/dL
3-6 months 9.5-13.5 g/dL
6-24 months 11.0-13.5 g/dL
2-5 years 11.2-13.5 g/dL
5-8 years 11.4-15.5 g/dL
8-12 years 11.6-15.5 g/dL
Male 12-15 years 12.3-16.0 g/dL
Male 15-18 years 12.6 -17.0 g/dL
Male > 18 years 13.6-17.5 g/dL
Female 12-15 years 11.8-15.5 g/dL
Female > 15 years 12.0-15.5 g/dL
Critical value ≤ 7.0 g/dl
Synonyms Hgb; Hb
Turn around times STAT 1 hour, Routine 4 hours
Additional information Reference ranges are altered by the intensity of chronic exposure to high altitudes or tobacco smoke, or by the duration of pregnancy.

A manual hemoglobin assay will be performed whenever accurate results cannot be obtained on an automated instrument because of some intrinsic abnormality of the specimen.

Values are calculated from conductance hematocrit on iStat analyzer. Conductance methods for hematocrit may yield spurious results in patients with high volume crystalloid infusion (particularly patients on bypass pump) or other plasma protein derangements. Therefore hemoglobin values based on conductance may not compare well with measured Hgb results.
Medical Necessity? Yes. Click here for more information
Last Updated 2/19/2010 3:21:56 PM
Entry Number 441
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