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Test Code HH Hemoglobin and Hematocrit, Blood, LAB753

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

Container/Tube:

Preferred: Lavender-Top (EDTA) Whole Blood

Specimen Volume: 300µL Whole Blood (3mL Lavender EDTA tube with minimum volume of 1mL), or 250µL Whole Blood (EDTA Microtainer)

Stability: Samples are stable for 24 hours at room temperature and up to 36 hours at 4°C.  Refrigerated samples must be allowed to come to room temperature before testing.

Collection Instructions: Forward promptly.

Reference Values

HGB
Males

0-14 days: 18.0-22.0 g/dL

15-29 days: 16.0-19.0 g/dL

1-5 months: 13.5-18.5 g/dL

6-23 months: 11.0-16.0 g/dL

2-3 years: 10.0-14.2 g/dL

4-13 years: 10.9-14.9 g/dL

≥14 years: 14.0-17.7 g/dL
 

Critical values

0-14 days: <10.0 g/dL or >25.0 g/dL
>14 days: <7.0 g/dL or >20.0 g/dL

 

Females

0-14 days: 18.0-22.0 g/dL

15-29 days: 16.0-19.0 g/dL

1-5 months: 13.5-18.5 g/dL

6-23 months: 11.0-16.0 g/dL

2-3 years: 10.0-14.2 g/dL

4-13 years: 10.9-14.9 g/dL

≥14 years: 12.2-15.6 g/dL
 

Critical values

0-14 days: <10.0 g/dL or >25.0 g/dL
>14 days: <7.0 g/dL or >20.0 g/dL
 

HCT
Males

0-14 days: 50.0-65.0%

15-29 days: 45.0-60.0%

1-2 months: 42.0-54.0%

3-11 months: 37.0-52.0%

12-23 months: 34.0-50.0%

2-13 years: 32.0-48.0%

≥14 years: 40.0-52.0%
 

Critical values

0-14 days: <30.0% or >70.0%

15-30 days: <24.0% or >70.0%
>30 days: <21.0% or >60.0%

 

Females

0-14 days: 50.0-65.0%

15-29 days: 45.0-60.0%

1-2 months: 42.0-54.0%

3-11 months: 37.0-52.0%

12-23 months: 34.0-50.0%

2-13 years: 32.0-48.0%

≥14 years: 35.0-47.0%
 

Critical values

0-14 days: <30.0% or >70.0%

15-30 days: <24.0% or >70.0%
>30 days: <21.0% or >60.0%

Useful For

Hemoglobin and Hematocrit can be helpful in the diagnosis of anemia.

Day(s) Test Set Up

Monday through Sunday

Methodology

Quantitative Automated Hematology Analyzer Using Electronic Resistance Detection and Flow Cytometry

Test Classification and CPT Coding

85018 & 85014