Complete Blood Count (CBC)Reported in g/dLHemoglobin
The oxygen-carrying protein inside red blood cells. A low hemoglobin is the usual laboratory definition of anemia.
What it measures
Hemoglobin binds oxygen in the lungs and releases it in tissues. The result is reported as grams per deciliter of blood, so it reflects both how many red cells you have and how full of hemoglobin they are. It is the CBC number people most often remember, and the one most directly tied to fatigue when it is low.
Why it is on the panel
Screening for anemia is one of the clearest reasons to run a CBC. Hemoglobin also gives you a baseline. A slow drift down across visits can matter even when a single result still sits inside the interval.
How to read it
Use hemoglobin as the anchor, then look at MCV. Small cells (low MCV) point one direction, often iron. Large cells (high MCV) point another, often B12, folate, alcohol, or thyroid and liver context from the rest of the panel.
When it runs higher
Hemoglobin can sit high when blood is concentrated by dehydration, when you live or train at altitude, or when the body is making more red cells than usual. A persistently high result is worth a conversation, especially with a high hematocrit.
When it runs lower
A low result means less capacity to carry oxygen. Common reasons include iron deficiency, menstrual or other blood loss, pregnancy, chronic disease, and vitamin deficiency. Symptoms people notice include fatigue, shortness of breath on exertion, and feeling cold.
How to use this page
This page explains what the measurement is for. It is educational. Your Healiam report includes the reference interval for your age and sex, and a clinician reads that result with your history, medicines, and the rest of the panel. Talk with a clinician before changing diet, supplements, or treatment because of a number on a report.
Hemoglobin
Hemoglobin is part of the full panel.
No referral or insurance required.
One preventive draw covers this measurement and the rest of the Healiam panel. CLIA-certified results come back in days.