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Band Neutrophils test

The percentage of young, immature neutrophils (bands) among your white cells; a rise (a 'left shift') may mean the marrow is rushing out cells to fight infection. Included with every panel.

At a glance

Price

Included with every panel

Baseline labs come free with any panel you build.

Results

In about 5 days

Most results are ready in about 5 days. Some specialty markers can take up to 21 days.

Preparation

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.

Blood draw

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

Bands are young neutrophils, the white blood cells that fight bacteria. When you’re fighting an infection, your bone marrow, where blood cells are made, can release them early, so more bands can be a sign of infection.

Why it matters for women

The expected range is the same for women and men. Bacterial infections can raise it, and women get urinary tract infections far more frequently than men. A simple bladder infection may not change this count, but one that spreads to the kidneys can.

You might check it if…

  • you’ve had a fever, chills or felt very unwell lately
  • you’ve had a urinary infection with fever or back pain
  • you’re recovering from a serious infection
  • you’re getting a routine blood count as part of a checkup

What your result may mean

High Band Neutrophils: what it may mean

A high band percentage (a left shift) may suggest a sudden bacterial infection or inflammation, as the bone marrow can release young neutrophils early. A kidney infection can raise it, while a simple bladder infection may not change it, and women can get urinary tract infections far more frequently than men. Because this is a share of all white cells, the number can move when other cell types change. Fever or chills can come along with it. Your clinician may also look at your absolute band count and total white count to see the full size of the response.

Low Band Neutrophils: what it may mean

Low or absent bands can be normal and may not be a worry. This percentage can sit near the bottom of the range when your body isn't rushing out young neutrophils, and the expected range can be the same for women and men. A low share can't rule out an infection by itself, especially one that's mild or just starting. Band counts can also vary a little from one lab reader to the next, so small differences between tests may not matter.

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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.