Return to Test Directory
Hemoglobin (LAB000616)
Test Mnemonic:


Specimen Requirements:

 Routine venipuncture; Collect in EDTA (lavender tube). Micro-collection is acceptable.  The specimen should be collected to the appropriate fill volume stated on the collection tube.  The minimum volume required is 90% of the stated tube volume.


Room Temperature 4 hours.  If testing cannot be completed within 4 hours sample must be refrigerated at 2-8° C.


Stable Refrigerated for 24 hours.

Causes for Rejection:

Clotted, QNS, sample identification error, hemolysis

Reference Range:
Turnaround Time:

STAT: 1 hour; Routine: 4 hours


Part of an automated multi-parameter counting system.  The hemoglobin count is measured using a sodium lauryl sulfate method.


 Samples are accepted 24 hours per day.


Galveston Lab, ADC Lab, CLC Lab, LCC Lab

Clinical Indication:

Monitoring hematological status when Complete Blood Count (CBC) parameters are not required.

CPT 4 Code:



Special Instructions: ECMO specimens should be delivered directly to the lab.

Critical Values: Hemoglobin < 7.0 g/dL (age <2 yrs. old), < 5.0 g/dL (age ≥2 yrs. old)

 Interfering Substances: High WBC counts, cold agglutinins, elevated lipids, elevated chylomicrons, elevated bilirubin, inappropriate anticoagulants.

When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent.
Return to Test Directory