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Test Code HGB Hemoglobin (Hgb), Blood

Additional Codes

  • Expanse Test Name:Hemoglobin, WB
  • Medinet Ref Code:HGB
  • OV Code:HEME*HGB

Performing Laboratory

St. Lukes Hospital Laboratory

Methodology

Automated Flow-Through Cytometry

Specimen Requirements

Draw blood in a lavender-top (EDTA) tube(s), and send 1 mL of EDTA whole blood. Forward promptly at ambient temperature.
Note:  If specimen will not arrive at St. Luke’s Hospital Laboratory the same day as drawn, refrigerate specimen. Transport at ambient temperature. Do not place EDTA whole blood directly on top of an ice pack.

Reference Values

Males

0-1 day:  15.3-18.7 g/dL

1 day-2 weeks:  17.3-22.2 g/dL

2 weeks-1 year:  10.3-14.3 g/dL

1-4 years:  11.0-14.5 g/dL

4-12 years:  11.5-15.1 g/dL

>12 years:  13.7-17.5 g/dL

Critical value (automatic call-back):  <7.0 g/dL

Females

0-1 day:  15.3-18.7 g/dL

1 day-2 weeks:  17.3-22.2 g/dL

2 weeks-1 year:  10.3-14.3 g/dL

1-4 years:  11.0-14.5 g/dL

4-12 years:  11.5-15.1 g/dL

>12 years:  11.2-15.7 g/dL

Critical value (automatic call-back):  <7.0 g/dL and >20 g/dL

Interfering Substances:

Lipemia, hemolysis, abnormal RBC morphology, and cold agglutinins may interfere with testing.

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

CPT: 85018

LOINC: 718-7