Hemoglobin (Hb) CPT: 85018
Expected Turnaround Time
Within 1 day
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Tube fill capacity
0.5 mL (500 μL for pediatric microtainer capillary tubes; fill tube to capacity.)
Lavender-top (EDTA) tube
Invert tube 8 to 10 times immediately after tube is filled at the time of collection.
Maintain specimen at room temperature.
To evaluate the hemoglobin content of your blood as part of a general health checkup; to screen for and help diagnose conditions that affect red blood cells (RBCs); if you have anemia (low hemoglobin) or polycythemia(high hemoglobin), to assess the severity of these conditions and to monitor response to treatment.
With a hematocrit or as part of a complete blood count (CBC), which may be ordered as a component of a general health screen; when you have signs and symptoms of anemia (weakness, fatigue) or polycythemia (dizziness, headache); at regular intervals to monitor these conditions or response to treatment.
A blood sample drawn from a vein or by a fingerstick (children and adults) or heelstick (newborns).