Immature Granulocytes
Immature granulocytes are young neutrophil precursors (promyelocytes, myelocytes, metamyelocytes) that are normally confined to bone marrow. Their appearance in blood (a left shift) signals rapid neutrophil turnover from severe bacterial infection, sepsis, inflammation, or bone marrow stimulation, and in rare cases reflects underlying myeloid malignancy.
Optimal range: who says what
No institution or named practitioner we track states an optimal target for Immature Granulocytes. How we verify ranges.
- General guidance, no named sourceAbsentNormally absent from peripheral blood
- Lab reference interval<1% of WBCWhat a lab report flags against. A lab interval is not an optimal target.
5 providers include this
Complete Blood Count (CBC)
Why Immature Granulocytes matters
Elevated in infections, inflammation, and bone marrow stress. Early indicator of immune system activation. Can signal severe infection or leukemia.
Which Providers Test Immature Granulocytes?
Function Health is both the cheapest ($365/year) and the most comprehensive (160+ biomarkers) panel that includes Immature Granulocytes.
5 panels that include it, cheapest first
| Provider | Annual Cost | Total Biomarkers | $/Biomarker |
|---|---|---|---|
 Function Health | $365 | 160+ | $2.28 |
| $375 | 108 | $3.47 | |
| $700 | 138 | $5.07 | |
| $895 | 100+ | $8.95 | |
| $1950 | 130+ | $15.00 |
$/Biomarker is annual cost divided by the panel's advertised biomarker count, not the price of this one test. We track 23 blood test providers (32 plans); 21 of those plans are itemized marker by marker. Compare all of them.
16 itemized panels do not include Immature Granulocytes
Superpower · WHOOP Advanced Labs · Labcorp OnDemand · Life Extension Elite · Everlywell · Mito Health · InsideTracker · Marek Health Base · Marek Health Comprehensive · Blueprint · Empirical Health · Oura Health Panels · SiPhox Health · Hims Labs · Healthspan · Ultrahuman Blood Vision Annual
11 providers not itemized in our matrix
We have not itemized these marker by marker (some sell tests one at a time), so this page cannot say whether they offer Immature Granulocytes. Check with them directly.
Life Extension Standard · Quest Health · Ultrahuman Blood Vision · Lifeforce · Hundred Health · Personalabs · Walk-In Lab · HealthLabs · WHOOP Specialized Panels · Marek Health Essential · Vitality Blueprint Upload
Frequently Asked Questions
What is the optimal range for Immature Granulocytes?
No institution or named practitioner we track states an optimal target for Immature Granulocytes. General guidance without a named source: Absent (Normally absent from peripheral blood). Lab reference interval: <1% of WBC. That is what a lab report flags against, not an optimal target.
Which blood test providers include Immature Granulocytes?
5 of the 21 blood testing panels we itemize marker by marker include Immature Granulocytes in their panels. This biomarker has limited availability.
Medical Disclaimer
This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.
Last reviewed Sep 23, 2026 · First published Nov 30, 2025