ig
ig — noun
1. a protein made by white blood cells that travels through the blood and helps the
a protein made by white blood cells that travels through the blood and helps the body fight infections by finding and stopping harmful bacteria and viruses
Umi's Ig levels dropped sharply after she came down with a bad flu, so the doctors prescribed extra monitoring.
collocation: Ig levels
When Vikram's lab report showed an immunoglobulin count of ten grams per litre, his doctor said he was in good health.
collocation: immunoglobulin count
Newborn babies receive most of their Ig from breast milk during the first weeks of life.
In the lab, Hana injected mice with a type of immunoglobulin called IgA to see how it would fight the flu virus that was spreading through the colony.
Qing caught three colds in one winter, and her blood test showed that her low Ig levels were the reason.
- antibody
broader and more common in everyday language; Ig is a specific category of antibody proteins
- immunoglobulin
the full scientific name that Ig is short for
- gamma globulin
a historical term for a subset of immunoglobulins found in blood plasma
文法句型
Ig + noun (Ig levels, Ig test, Ig count)
Ig + verb (Ig helps the body fight infections)
用法筆記
Ig stands for immunoglobulin. There are five main types — IgA, IgD, IgE, IgG, and IgM — each with a different role in the immune system. The plural form Igs is common when contrasting types.
常見錯誤
2. the written abbreviation 'Ig' (capital I, lowercase g) used on medical charts an
the written abbreviation 'Ig' (capital I, lowercase g) used on medical charts and laboratory reports to represent the word 'immunoglobulin' — unlike sense 1, which describes the protein itself, this sense refers to the way it is represented in writing
The patient's chart read 'Ig: 8.5 g/L' as a quick note for the nursing team.
typical format in medical charts: Ig + value + unit
Dr. Binta scribbled 'Ig test' on the referral form because the handwriting would be too small to read with the full word.
The lab technician Eva always typed 'Ig' on the morning reports, since she had thirty patient results to enter before lunch.
Nurse Lucia entered the Ig value from the morning blood draw into the chart, then prepared the treatment for room 204.
- immunoglobulin
the full form used in formal writing and speech
用法筆記
Always written with a capital I and a lowercase g (Ig). When reading aloud, most medical professionals say the letters 'I-G' rather than the full word.
常見錯誤
3. the short written form of 'inspector general', used as a title for the person wh
the short written form of 'inspector general', used as a title for the person who leads the department that investigates problems and checks how money is spent in a government agency or military branch
The IG investigated how the department had spent its yearly budget on new equipment.
A report from the office of the Inspector General found serious problems in the prison system.
full title alongside abbreviated form
Senator Wei asked the IG to review the terms of the new military supply contract.
The IG's office released a public statement about safety violations at the training centre.
- investigator
broader; not specific to government oversight
- ombudsman
a similar role but focused on citizen complaints rather than internal agency oversight
用法筆記
Written in all capital letters (IG) in most official documents — distinct from the medical abbreviation Ig (capital I, lowercase g), which stands for immunoglobulin. Used both as a standalone title or before a name (e.g., IG Smith). More common in the United States than in other English-speaking countries.