Included with every panel
Baseline labs come free with any panel you build.
Other tests
Absolute Basophils test
The absolute number of basophils, white cells that drive histamine release in allergic and inflammatory responses. Included with every panel.
At a glance
In about 5 days
Most results are ready in about 5 days. Some specialty markers can take up to 21 days.
Check before your draw
This marker has no preparation tag, but it can still need preparation. Contact us before your draw if you’re not sure.
Walk in at Quest
Your lab order arrives by email. Most Quest locations take walk-ins, so bring it with a photo ID.
What it measures
Basophils are the rarest type of white blood cell, and this is a count of them. They release histamine, a chemical behind allergy symptoms like itching and swelling.
Why it matters for women
There’s no women-specific pattern for basophils. As part of the blood count included with every panel, it helps round out the picture of your immune system. A high count can point to allergies or ongoing inflammation, and less frequently to a problem in the bone marrow, where blood cells are made.
You might check it if…
- you get allergies, hives or ongoing itching
- you’re living with an ongoing inflammatory condition
- a past blood count was flagged as unusual
What your result may mean
High Absolute Basophils: what it may mean
A high absolute basophil count (basophilia) may point to allergies or long-lasting inflammation and, less frequently, to a myeloproliferative disorder, where the bone marrow can make too many blood cells. It can happen with inflammatory bowel disease, rheumatoid arthritis or an underactive thyroid (hypothyroidism). Because basophils are so few, a small change can look large on paper, and a clinician may repeat the count before reading much into it. Some people may notice itching, hives or a runny nose from allergies, and others may have no symptoms.
Low Absolute Basophils: what it may mean
A low absolute basophil count can be common and is rarely meaningful on its own. These are the rarest white blood cells, so a healthy count can sit close to zero. A brief dip may follow a sudden infection, stress, steroid medicines or an overactive thyroid (hyperthyroidism). A low count may not cause symptoms by itself, and a clinician may pay more attention to the rest of your white cells.
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These notes provide context and do not diagnose a condition. Not yet available in NY, NJ, RI, HI, ND, SD or WV.