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]

guaiac

/guai·ac/ (gwi´ak) a resin from the wood of trees of the genus Guajacum, used as a reagent and formerly in treatment of rheumatism.

guaiac

[gwī′ak]
a wood resin, formerly used as a reagent in laboratory tests for the presence of occult blood.

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 ?
Lot 2: Immunochemical Guaiac Faecal Occult Testing Kit
A blend of guaiac wood, cashmere wood and sandalwood lingers in the dry down.
New fecal immunochemical technology that uses brush sampling is superior to standard guaiac fecal occult blood testing as a screening tool for colorectal cancer, Dr.
Illness severity was measured using the Score for Neonatal Acute Physiology (SNAP) (3, 4), which uses the worst recorded values of >24 routinely measured physiologic variables (mean blood pressure, heart rate, respiratory rate and temperature, blood gas data, blood chemistries and blood counts, urine output, presence of seizures, apnea, stool guaiac, base excess, [Po.
The framework agreement for the supply of test kits for colorectal cancer based on guaiac for the occult blood in the stool, a self sample taken at home by the patient.
Further examination then revealed pallor, no abdominal masses or distension and guaiac positive stools with hemoglobin of 6.
Lab tests should include a CBC count if the patient's stool is guaiac positive.
As is the case in the general population, only 25% of Medicare beneficiaries are screened each year with traditional guaiac fecal occult blood tests (FOBTs), compared wit h much higher rates for other regular cancer screening tests such as mammography (75%) or Pap smear testing (66%).
2 List of Figures Figure 1: Colorectal Cancer Staging 24 Figure 2: Trends in Colorectal Cancer Incidence, 2010-2019 44 Figure 3: Example of a Guaiac Fecal Occult Blood Card: Immunostics Hema-Screen 48 Figure 4: Fecal Occult Blood Test Lateral Flow Device Architecture 52 Figure 5: Biohit Colonview (example of immuno-FOB test) 53 Figure 6: Beckman Coulter Hemoccult-ICT (example of immuno-FOB test) 54 Figure 7: Veda Labs Easy Reader Immuno-FOB Test LFD Reader 60 Figure 8: OC-Hemodia Agglutination FOB Test (manually performed) 65 Figure 9: OC-Sensor/Diana FOB Test Sample Cartridge 66 Figure 10: OC-Sensor/Diana FOB Test Instrument 67 Figure 11: Fujirebio HemSp/MagStream HT Magnetic Agglutination Reaction 68
The immunochemical and guaiac formats offer excellent 14-day stability, high-sensitivity and specificity, providing proven results for over 40 years.
Calling those findings "a shocker," he said that perhaps "we need to put the guaiac cards [for in-office testing] in a locked drawer labeled 'use only in case of emergency.