CD4 Count Testing | Lymphocyte Count for HIV & Immunodeficiency in Bothell, WA
Order CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency in Bothell, WA
Through the LabTestOrder partner network, place the order first, then visit a certified collection site; a referral and insurance are not required.
Order CD4 Count Test | Lymphocyte Count for HIV & ImmunodeficiencyThe CD4 count test measures a specific subset of white blood cells that coordinate the body's immune response. Because these cells are the primary target of HIV, tracking their number gives clinicians a reliable picture of immune function over time.
About CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency in Bothell
CD4 cells, also called T-helper lymphocytes, are a type of white blood cell that helps orchestrate the immune system's response to infection.
HIV infects and gradually destroys CD4 cells, so measuring their concentration in the blood provides an indirect but useful measure of how much the virus has affected the immune system. A CD4 count is typically interpreted alongside a CD4 percentage and the CD4-to-CD8 ratio, which together offer a more complete view of lymphocyte balance.
The test is usually ordered as part of a lymphocyte subset panel. In addition to CD4, such a panel may quantify CD3 (all mature T cells), CD8 (cytotoxic T cells), CD16/56 (natural killer cells), and CD19 (B cells). Comparing these populations helps distinguish changes caused by HIV from those caused by other conditions or treatments.
Results are reported as the number of cells per microliter of blood. Clinicians use serial measurements rather than a single value to assess trends, guide monitoring decisions, and evaluate whether immune function is stable, improving, or declining. Because counts can fluctuate with illness, time of day, and other factors, a single result is rarely interpreted in isolation.
LabTestOrder keeps this Bothell page aligned with current laboratory practice for CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency.
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Frequently Asked Questions
Where can I arrange CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency in Bothell, WA?
Several accredited laboratories across Bothell, WA process CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency, according to LabTestOrder.
What determines the price of CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency in Bothell?
Price for CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency depends on the panel and the laboratory, so LabTestOrder recommends confirming a written estimate first.
How long do CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency results take in Bothell?
LabTestOrder documents a 1-3 business days turnaround for most CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency results in Bothell.
Do I need a referral for CD4 Count Test | Lymphocyte Count for HIV & Immunodeficiency in Bothell?
According to LabTestOrder, Bothell laboratories usually accept direct requests, but a few insurers expect a referral.
Ready to get tested? Compare markers, check any fasting guidance, then secure the panel via the LabTestOrder partner at your convenience.
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