guaiac


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guaiac

 [gwi´ak]
a resin from certain Caribbean trees, used as a reagent.
guaiac test one for occult blood; glacial acetic acid and guaiac are mixed with the specimen; on addition of hydrogen peroxide, the presence of blood is indicated by a blue tint.

guai·ac

(gwī'ak),
The resin of Guaiacum officinale or G. sanctum (family Zygophyllaceae); a nauseant, diaphoretic, stimulant, and reagent used in testing for occult blood.
Synonym(s): guaiac gum
[Sp. guayaco, imitating the native Carib name]

lignum vitae

Herbal medicine
A Caribbean tree that is rich in saponins, resin, guaiaretic and guaiacolic acids; it is anti-inflammatory, laxative and stimulatory, and has been used to treat arthritis and gout; its products have been commercialised in mainstream medicine in the guaiac test for occult bleeding of the large intestine, which is often a sign of colorectal cancer.

guai·ac

(gwī'ak)
Nauseant, diaphoretic, stimulant, and reagent used in testing for occult blood. Also called guaiac gum.

guai·ac

(gwī'ak)
The resin of Guaiacum officinale or G. sanctum; a nauseant, diaphoretic, stimulant, and reagent used in testing for occult blood.
References in periodicals archive ?
The Hb stability in the 2 quantitative kits--NS Plus and OC Diana-was poor compared with the devices of the qualitative FIT and guaiac kits in the frozen condition when an 80% threshold was used to define stability.
Types of food that people eat can result in the guaiac being false positive due to the peroxidase reacting with something from their diet (e.g., red meat).
Its sensitivity and specificity reduce the rate of false positive results often associated with traditional guaiac test methods.
I particularly enjoyed professor Shickle's presentation on screening, during which he asked the question: "What do we gain from sixth stool guaiac?" While not directly relevant to eye health, he demonstrated the processes involved in determining when a screening is most cost effective and, arguably, provides best value to the commissioner.
As a result, medicinal plants such as aloe, sarsaparilla, and guaiac, as well as timber used in shipbuilding and spices from the Antilles, were of both practical and symbolic significance.
The Guaiac test is important to confirm the presence of occult blood in stool (Boyle, 2008).
Anemili olgunun arastirilmasinda gerekli laboratuvar incelemeleri (6,7) Genel baslangic arastirmalar Hb ve Hct belirlenmesi RBC sayisi ve MCV, MCH, MCHC, RDW, HDW'ni iceren eritrosit gostergeleri Lokosit sayisi ve formul lokosit, trombosit sayisi Periferik kan yaymasi Demir eksikligi suphesi Serbest eritrosit protoporfirin Serum ferritin seviyesi Diskida gizli kan (guaiac pozitisigi) Eger gerekliyse Meckel divertikulu icin 99mTc Eger gerekliyse endoskopi (ust ve alt barsak) Vitamin [B.sub.12] ve folik asit eksikligi suphesi Kemik iligi Serum vitamin [B.sub.12] seviyesi, serum folat seviyesi Histamin enjeksiyonu sonrasi gastrik analiz Vitamin [B.sub.12] emilim testi (radyoaktif kobalt) (Schilling testi) Hemolitik anemi suphesi 1.
The stool should be tested for guaiac to determine if there is any gastrointestinal dysfunction.
The fourth vertical can be completed to GUAIAC, but the fifth is constipated with consonants.
THIS is a watery, fresh version of the original with notes of herbaceous complex and guaiac wood.
This is why BSE (breast self examination), TSE, mammography, colonoscopy, digital rectal exam of the prostate, stool guaiac, blood and urine tests, chest X-ray, etc.