Laboratory tests, and specifically blood tests, are among the most important diagnostic tools for leukemia. For some types of leukemia, such as chronic lymphocytic leukemia, blood tests may be the only test needed to confirm the diagnosis (but other tests may be used to find out more about the cancer).
By looking at a sample of your blood, your doctor can determine if you have abnormal levels of red or white blood cells or platelets — which may suggest leukemia. A blood test may also show the presence of leukemia cells, though not all types of leukemia cause the leukemia cells to circulate in the blood.
Acute leukemias — which are incredibly rare — are the most rapidly progressing cancer we know of. The white cells in the blood grow very quickly, over a matter of days to weeks. Sometimes a patient with acute leukemia has no symptoms or has normal blood work even a few weeks or months before the diagnosis.
In some cases, your doctor might order bone marrow testing even though your blood tests didn't indicate leukemia. That's because in some types of leukemia, cancer cells stay in the bone marrow and don't circulate in the blood.
Your doctor will conduct a complete blood count (CBC) to determine if you have leukemia. This test may reveal if you have leukemic cells. Abnormal levels of white blood cells and abnormally low red blood cell or platelet counts can also indicate leukemia.
These blood cells replicate or accumulate more slowly and can function normally for a period of time. Some forms of chronic leukemia initially produce no early symptoms and can go unnoticed or undiagnosed for years.
Because many types of leukemia show no obvious symptoms early in the disease, leukemia may be diagnosed incidentally during a physical exam or as a result of routine blood testing.
The median age of a patient diagnosed with acute myeloid leukemia (AML), chronic lymphocytic leukemia (CLL) or chronic myeloid leukemia (CML) is 65 years and older. However, most cases of acute lymphocytic leukemia (ALL) occur in people under 20 years old. The median age of an ALL patient at diagnosis is 15.
Early Symptoms of Acute Leukemia
Shortness of breath. Fatigue. Unexplained fever. Night sweats.
People often feel ill quite quickly. Most symptoms of acute leukaemia are caused by leukaemia cells filling the bone marrow. This means healthy blood cells do not move into the blood as normal.
Aside from leukemia, most cancers cannot be detected in routine blood work, such as a CBC test. However, specific blood tests are designed to identify tumor markers, which are chemicals and proteins that may be found in the blood in higher quantities than normal when cancer is present.
Earliest signs of leukemia
Often, the initial symptoms closely resemble those of the flu, but unlike flu symptoms, they then do not go away. Examples of common early leukemia symptoms include: loss of appetite. bone pain.
If caught early, leukemia can be cured by undergoing several cancer treatments.
If this disease is left untreated, a person with leukemia becomes increasingly susceptible to fatigue, excessive bleeding and infections until, finally, the body becomes virtually defenseless, making every minor injury or infection very serious. Leukemia may be fatal.
Acute leukemia symptoms can often appear suddenly
With acute leukemia, symptoms tend to develop very quickly. You may suddenly spike a fever that won't go away, develop an infection for no apparent reason, or start bleeding spontaneously from your nose or gums and not be able to stop it.
The signs or symptoms of leukemia may vary depending on whether you have an acute or chronic type of leukemia. Acute leukemia may cause signs and symptoms that are similar to the flu. They come on suddenly within days or weeks. Chronic leukemia often causes only a few symptoms or none at all.
How is leukemia diagnosed? A diagnosis of leukemia is usually made by analyzing a patient's blood sample through a complete blood count (CBC) or microscopic evaluation of the blood, or by using flow cytometry.
While the exact cause of leukemia—or any cancer, for that matter—is unknown, there are several risk factors that have been identified, such as radiation exposure, previous cancer treatment and being over the age of 65.
What is Leukemia (Blood Cancer)? Leukemia starts in the soft, inner part of the bones (bone marrow), but often moves quickly into the blood. It can then spread to other parts of the body, such as the lymph nodes, spleen, liver, central nervous system and other organs.
Chronic lymphocytic leukaemia (CLL) is a type of slow-growing leukaemia that affects developing B-lymphocytes. B lymphocytes (also known as B-cells) are specialised white blood cells.
So while you may be able to see if you have genetic markers for future cancer development, there's currently no home test available that can tell you whether you have leukemia currently. Possible tests available for home use can give you an idea of your overall health and risk factors, but they can't diagnose leukemia.
Pancreatic cancer doesn't garner much treatment success for a number of reasons: It's hard to detect early. The pancreas is deep within the body so there aren't signs people can detect easily. The disease spreads quickly to other nearby organs, including liver, intestines, and gall bladder.