UCSF Departments of Pathology and Laboratory Medicine | Lab Manual | Laboratory Test Database

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Hemoglobin

Item

Value

Approval req'd?

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

If you have additional questions regarding this test, please call: 415-353-1667

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Hemoglobin