This must be a result from a blood test. Neutro is the short form for "neutrófilos". Some examples:

Neutrophiles
Neutrophiles.
www.callisto.si.usherb.ca:8080/ rblouin/histo/sang/neutro.htm

[PDF] Quantitative Evaluation of Neutrophiles activity
File Format: PDF/Adobe Acrobat - View as HTML
... All neutrophiles from patients with immunodeficiency connected with dysfunction of movement abilities, eg the Chediak-Higashi syndrome patients, exhibit ...
www.ichmt.org/abstracts/Vim-01/abstracts/03-04.pdf


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Note added at 11 mins (2004-11-08 13:23:34 GMT)
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Sorry about the first reference: it\'s in French. Here\'s another one, in English:

An isologous antigen-antibody reaction with human neutrophiles ...
... 1966 November; 45(11): 1741 1750. An isologous antigen-antibody reaction with human neutrophiles, related to neonatal neutropenia. ...
www.pubmedcentral.com/articlerender.fcgi?artid=292858

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Note added at 27 mins (2004-11-08 13:39:48 GMT)
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Normally used in plural. The singulas is either neutrophil or neutrophile. Here\'s Webster\'s definition of the term:

neutrophil (notro fil, nyo-; -tre-)
n.
a granular type of phagocytic white blood cell in vertebrate blood, stainable by neutral dyes
adj.
easily stained by neutral dyes

Also neutrophile (-fl)

Etymology
[< neutral + -phil]

(C)1995 Zane Publishing, Inc. (C)1994, 1991, 1988 Simon & Schuster, Inc.

Similar definition is given by \"The Bantam Medical Dictionary\": \"a variety of granulocyte (a type of white blood cell) distinguished by a lobed nucleus and the presence in its cytoplasm of fine granules that stain purple with Romanovsky stains. It is capable of ingesting and killing bacteria and provides an important defense against infection.\"

Neither dictionary brings the word \"neutrocyte\".

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Note added at 31 mins (2004-11-08 13:43:23 GMT)
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Typo: singulaR