OCCULT BLOOD AND PREGNANCY TESTING Flashcards
_________ is defined as presence of hidden or unseen blood in the stool which can be detected by performing the fecal occult blood test
Fecal occult blood
When present in large amount, fecal blood may be readily identified how?
macroscopically
True/False
With the lower GI tract, bright red blood can coat the surface of the stools
True
What test is used to detect occult blood in the stool for
detecting and localizing diseases of the GI tract
Fecal occult blood test
Fecal blood is a frequent and early symptom of
colorectal cancer
Fecal occult blood testing decreases mortality from colon cancer by
15-35%.
Fecal Occult Blood Test
Patient must be instructed to have a meat-free diet for how long?
3 days
Fecal Occult Blood Test
Collect how many specimens from how many separate days
3 and 3
When collecting specimen for the fecal occult blood test you want to avoid contamination from what?
urine, menstrual blood, and toilet water
Fecal Occult Blood Test
-Positive reaction: _____________
-Negative reaction: _____________
Positive reaction
1) Indicated by appearance of blue color
Negative reaction
1) No blue color reaction
What does HCG stand for?
Human Chorionic Gonadotropin
_______ is a hormone produced by the placenta from the earliest stage of fetus development
HCG
What can indicate these issues
(1 Trophoblastic tumors in men
(2 Beginning of menopause
(3 Cyst-like moles (hydatidiform)
presence of HCG
HCG assay levels are also used for differential studies on other than normal pregnancy. What are some examples?
Ectopic pregnancy
Threatened, incomplete, or complete abortion
Quantitative HCG is used for
To estimate gestational age
To diagnose very early pregnancy
