Metamyelocytes

HematologyAlso known as: Metamyelocytes (only reported if detected)Also known as: Left shiftcells/uL

Counts immature white blood cells (metamyelocytes) in body fluids.

Normal Range
0 – 0.8 10*3/uL
10*3/uL
Abnormal Levels
< 0 cells/uL
> 0 cells/uL
Specimen Type
Blood

Why This Biomarker Matters

Metamyelocytes in body fluids are abnormal and may indicate leukemia, severe infection, or bone marrow disease requiring prompt medical evaluation.

Understanding Your Results

Normal Range

0 – 0.8 10*3/uL

Optimal Ranges

Clinician-defined 4-point reference thresholds (cells/uL)

Default Range

0
0
0
0
Low
0 cells/uL
Borderline Low
0 cells/uL
Optimal
0 cells/uL
Borderline High
0 cells/uL

Overview

Metamyelocytes are immature white blood cells found in bone marrow that normally do not appear in significant numbers in body fluids. Their presence in blood, joint fluid, or other body compartments is abnormal and may indicate leukemia, severe infection, or a bone marrow disorder. This test counts metamyelocytes as part of a differential analysis in body fluid samples. Elevated levels suggest the bone marrow is releasing immature cells prematurely, which warrants further investigation.

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

30433-7Primary
Metamyelocytes [#/volume] in Blood
10*3/uL
35031-4
Metamyelocytes [#/volume] in Body fluid
10*3/uL
739-3
Metamyelocytes [#/volume] in Blood by Manual count
10*3/uL
40651-2
Metamyelocytes [Presence] in Blood
40568-8
Metamyelocytes [#/volume] in Body fluid by Manual count
10*3/uL
56473-2
Metamyelocytes [#] in Cerebral spinal fluid by Manual count
{#}
66137-1
Metamyelocytes [#/volume] in Blood from Fetus by Manual count
10*3/uL
35030-6
Metamyelocytes [#/volume] in Cerebral spinal fluid
10*3/uL
76405-0
Metamyelocytes [#] in Body fluid by Manual count
{#}
Metamyelocytes: Normal Range, Testing & Clinical Significance | Healos | Healos