LQ 1 Flashcards
The methods of extraction, storage, and handling of nucleic acid molecules, depends on the type of the tissue from where they were extracted .
TRUE
FALSE
FALSE
What do these Molecular Testing detect?
- thrombophilia mutations (Factor II, Factor V, MTHFR 677, and MTHFR 1298 genotypes
- HIV-1 RNA & HBV DNA & HCV RNA
CMV - Mycoplasma pneumoniae & Bordetella pertussis.
- influenza A and B viruses
CLEAVASE/INVADER TECHNOLOGY
thrombophilia mutations (Factor II, Factor V, MTHFR 677, and MTHFR 1298 genotypes
What do these Molecular Testing detect?
- thrombophilia mutations (Factor II, Factor V, MTHFR 677, and MTHFR 1298 genotypes
- HIV-1 RNA & HBV DNA & HCV RNA
CMV - Mycoplasma pneumoniae & Bordetella pertussis.
- influenza A and B viruses
LOOP-MEDIATED AMPLIFICATION (LAMP)
Mycoplasma pneumoniae & Bordetella pertussis
What do these Molecular Testing detect?
- thrombophilia mutations (Factor II, Factor V, MTHFR 677, and MTHFR 1298 genotypes
- HIV-1 RNA & HBV DNA & HCV RNA
CMV - Mycoplasma pneumoniae & Bordetella pertussis.
- influenza A and B viruses
NICKING ENZYME AMPLIFICATION REACTION (NEAR)
influenza A and B viruses
In Transcription, the antisense strand is the__.
template strand & non-coding strand???
non-template strand & non-coding strand
template strand & coding strand
non-template strand & coding strand
non-template strand & coding strand
Muddy brown urine casts with high urine protein are usually seen in
A. Post-renal azotemia
B. Prerenal azotemia
C. Intrarenal azotemia
C. Intrarenal azotemia
Confirmatory tests require ____ to be certain of the diagnosis.
A.low specificity
B. low sensitivity
C. high specificity
D. high sensitivity
C. high specificity
A test with a higher sensitivity ____ a greater proportion of persons ____ disease.
A. identifies – without
B.excludes - without
C.identifies – with
D.excludes - with
C.identifies – with
The fundamental characteristics of TARGET AMPLIFICATION METHODS EXCEPT:
A.The primers bind to complementary sequences on one strand of double-stranded targets.
B.The amplification products in all the techniques are defined by two oligonucleotide primers.
C.They are enzyme-mediated processes that synthesize copies of target nucleic acid.
D.All produce millions to billions of copies of the targeted sequence in a matter of hours
A.The primers bind to complementary sequences on one strand of double-stranded targets.
Amniocentesis can be typically done during this period of gestation:
A.between 18-20 weeks
B.between 16 and18 weeks
C. between 20 - 28 weeks
D.between 14 and16 weeks
B.between 16 and18 weeks
The postanalytic evaluation process, on the clinical significance of the Laboratory Test result, includes the following:
A.critical values
B.delta checks
C.reference ranges
D.linearity ranges
E.pretest and posttest probability
F.1st, 3rd, & 5th choices only
G. 2nd & 4th choices only
H.All of the above
F.1st, 3rd, & 5th choices only
A.critical values
C.reference ranges
E.pretest and posttest probability
Chorionic villus sampling (CVS), which provides tissue from the developing placenta is obtained by the transabdominal or transvaginal procedure, performed at _______ gestation.
A.18 – 22 weeks
B.14 to 18 weeks
C.10 to 14 weeks
D.22-26 weeks
C. 10 to 14 weeks The transabdominal or transvaginal procedure is performed at 10 to 14 weeks gestation.
The methods of extraction, storage, and handling of nucleic acid molecules, depends on the type of the tissue from where they were extracted.
A.TRUE
B.FALSE
B.FALSE
In virus, the main enzyme responsible for synthesizing a double helix complementary DNA strand (cDNA) from RNA is___:
A.ribonuclease H
B.RNA polymerase
C.reverse transcriptase
D.integrase
C.reverse transcriptase
The major cause of simultaneous elevation of prothrombin time & activated partial thromboplastin time is _______.
A.Coumadin therapy
B.Combined Heparin & Coumadin therapy
C.Heparin therapy
D.Disseminated intravascular coagulation
E.Coagulation Factor Deficiency
D.Disseminated intravascular coagulation
A frequent cause of inadequate samples is the presence of high concentrations of interfering substances in the specimen such as in the following conditions:
A.Lipemia
B.Hemolysis
C.Gammopathies
D.Icterus
E.1st, & 3rd choices only
F.2nd & 4th choices only
G.All of the above
G.All of the above
How are cytosines connected to guanines?
A.10 hydrogen bonds
B.2 hydrogen bonds
C.3 hydrogen bonds
D.25 hydrogen bonds
C.3 hydrogen bonds
It is the process of comparing a current laboratory result with results obtained on a previous specimen from the same patient.
A.critical values
B.delta checks
C.reference ranges
D.linearity ranges
E.pretest and posttest probability
F,1st, 3rd, & 5th choices only
G.2nd & 4th choices only
H.All of the above
B.delta checks
These are laboratory results that may represent a life-threatening situation that may not otherwise be readily detectable.
A.critical values
B.delta checks
C.reference ranges
D.linearity ranges
E.pretest and posttest probability
F.1st, 3rd, & 5th choices only
G.2nd & 4th choices only
H.All of the above
A.critical values
The usual blood gas picture in a patient with diabetes mellitus.
A.Metabolic alkalosis
B.Respiratory acidosis
C.Metabolic acidosis
D.Respiratory alkalosis
C.Metabolic acidosis
Osler’s rule.
A.For patients under the age of 60 years, try to attribute all abnormal laboratory findings to a single cause.
B.Never rely on a single out-of-reference range value to make a diagnosis.
C.Only if there is no possible way to correlate all abnormal findings should the possibility of multiple diagnoses be entertained.
D.1st & 3rd choices only
E.1st & 2nd choices only
F.All of the above
D.1st & 3rd choices only
Which findings would be diagnostic of a severe liver failure?
Choices: Decreased
Increased
serum bilirubin
total protein
De Ritis ratio
Lactate Dehydrogenase
serum bilirubin - increased
total protein - decreased
De Ritis ratio - increased
Lactate Dehydrogenase - increased
A patient complaining of dizziness has the following Lab results below. Microcytic Normocytic erythrocytes; Normal serum iron/total Iron binding capacity ratio; Decreased red cell count; Normal iron binding capacity; Decreased serum iron; Normal red cell distribution width; High ferritin. What is the most probable diagnosis?
A.Anemia of Chronic Disease
B.Renal Failure
C.Aplastic Anemia
D.Iron Deficiency Anemia
E.Hemolytic Anemia
F.Megaloblastic Anemia
A. Anemia of Chronic Disease
Which findings would be diagnostic of massive muscle tissue necrosis?
Myoglobin
Potassium
Creatine Kinase (CK)
Myoglobin - increase
Potassium - increase
Creatine Kinase (CK) - increase
????
A jaundiced patient with all high serum enzymes & bilirubin, but normal protein, is most likely to have _____.
A.Obstructed cystic duct
B.Inflamed liver
C.Hemolytic anemia
D.Hepatoma
B.Inflamed liver
MOLECULAR TESTS for Disease Detection
REVERSE LINE-BLOT HYBRIDIZATION
- gene expression profiling & DNA sequencing
- HIV-1 RNA & HBV DNA & HCV RNA
- CMV
- cytokines in inflammation
- M tuberculosis
M tuberculosis
MOLECULAR TESTS for Disease Detection
ASSAYS CAPTURE HYBRID
- gene expression profiling & DNA sequencing
- HIV-1 RNA & HBV DNA & HCV RNA
- CMV
- cytokines in inflammation
- M tuberculosis
- CMV
MOLECULAR TESTS for Disease Detection
MICROARRAYS OLIGONUCLEOTIDE
- gene expression profiling & DNA sequencing
- HIV-1 RNA & HBV DNA & HCV RNA
- CMV
- cytokines in inflammation
- M tuberculosis
- gene expression profiling & DNA sequencing
MOLECULAR TESTS for Disease Detection
MACROARRAYS
- gene expression profiling & DNA sequencing
- HIV-1 RNA & HBV DNA & HCV RNA
- CMV
- cytokines in inflammation
- M tuberculosis
- cytokines in inflammation
These cells can be cultivated and made to undergo more than twice but a limited number of divisions before senescence by adding cytokines and lectins to the growth media.
A.Neutrophils
B.gastrointestinal mucosal cells
C.nasal epithelial cells
D.fibroblasts
E.Lymphocytes
A.Neutrophils
Which findings would be diagnostic of disseminated intravascular coagulopathy (DIC) in a patient with fulminant liver failure?
Choices: Decreased
Increased
activated partial thromboplastin time (aPTT)
partial thromboplastin time (PTT)
D-dimer
platelet counts
activated partial thromboplastin time (aPTT) - increased
partial thromboplastin time (PTT) - increased
D-dimer - increased
platelet counts - decreased
Factors That Influence Reference Ranges:
Choices:
* inter-individual variation
* pre-analytical factor with physician as specimen collector
* analyst & laboratory factor
A.time between receipt of specimen and analysis
- pre-analytical factor with physician as specimen collector
Factors That Influence Reference Ranges:
Choices:
* inter-individual variation
* pre-analytical factor with physician as specimen collector
* analyst & laboratory factor
exposure to environmental factors
- inter-individual variation
Factors That Influence Reference Ranges:
Choices:
* inter-individual variation
* pre-analytical factor with physician as specimen collector
* analyst & laboratory factor
.time between specimen collection and specimen endorsement
- pre-analytical factor with physician as specimen collector
Factors That Influence Reference Ranges:
Choices:
* inter-individual variation
* pre-analytical factor with physician as specimen collector
* analyst & laboratory factor
sample transport
- inter-individual variation
Factors That Influence Reference Ranges:
Choices:
* inter-individual variation
* pre-analytical factor with physician as specimen collector
* analyst & laboratory factor
type of laboratory methods
- analyst & laboratory factor
In the documentation of panic values, the following information should be written & recorded except:
A.name of patient
B.title or position of the caregiver who is notified
C.the time and date of notification
D.the read-back by the health care worker
E.critical value
F.name of caregiver
G.All except 1st & 5th choices
H.All except 2nd & 6th choices
I.No exception
I.No exception
The most common site for cervical neoplastic changes.
A.Cervical-vaginal junction
B.Endometrial-endocervical junction
C.Endocervical-exocervical junction
C.Endocervical-exocervical junction
A “Normal of Negative FNAC” report means:
A.the absence of any disease
B.the Physician could have missed the tumor location
C.the tumor could be fibrotic & less cellular
D.the tumor could be predominantly fluid with scarce cells
E.last 3 choices only
F.All of the above
F.All of the above
This factor on the part of the Clinician affects greatly the accuracy of the cytologic examination:
A.sample collection
B.interpretation of smears
C.patient & sample preparation
D.staining of the material
E.1st & 3rd choices only
F.2nd & 4th choices only
G.All of the above
E.1st & 3rd choices only
Obtaining specimens from the vaginal posterior fornix is an example of ___.
A.aspiration cytology
B.exfoliative cytology
C.abrasive cytology
B.exfoliative cytology
Rhonda K. Roby, a major author on DNA analysis for identification, traced the 1st ever recorded parentage argument to the time of the King who was granted _____.
A.King Solomon, God gave him much with wisdom and riches
B.the gene for being genius
C.divine wisdom confirm
D.doctorate degree in counseling
E.scholarly wisdom
C.divine wisdom confirm
Sputum collection for Tuberculosis must be collected this number of times before proclaiming a patient as Negative:
A.One time only if chest X-ray is negative
B.Twice in any day for a week
C.Once daily x 3 consecutive days
D.Thrice in one day 4 hours apart
C.Once daily x 3 consecutive days
Uses of DNA analysis includes:
A.inclusion or exclusion of crime suspect
B.help answer specimen mix-ups in the Lab
C.inclusion or exclusion of paternity claims
D.reconstruction of families
E.1st & 3rd choices only
F.2nd & 4th choices only
G.All of the above
G.All of the above
DNA is useful as marker because____
A.it is present in all cells of the body
B.it has the same structure in each body cell
C.it could withstand most environmental insults
D.its testing is very sensitive when replication enzyme is used
E.1st & 2nd choices only
F.3rd & 4th choices only
G.All of the above
G.All of the above
This DNA can be retrieved from calcified postmortem bone even for centuries.
A.nuclear DNA
B.nucleoid DNA
C.mitochondrial DNA
D.any of the above
Source: Identity Analysis PPT
C.mitochondrial DNA
Paternity can be proven by the following tests:
A.laboratory chemical testing of blood & body fluids for child & alleged father
B.blood typing of child & alleged father
C.DNA analysis
D.2nd & 3rd choices only
E.All of the above
D.2nd & 3rd choices only
Routine blood group used for investigations in cases of disputed parentage EXCEPT:
Duffy
ABO
HLA
Rh
Lewis
Lewis
What is the maximum but adequate amount of amniotic fluid can a physician withdraw without endangering the fetus:
20 to 30 mL
5-10 mL
30-50 mL
20 to 40 mL
20 to 30 mL
How would you apply each Type of Cytological techniques?
- Abrasive cytology
- Aspiration cytology
- Exfoliative cytology
Avoided urine
Exfoliative cytology
How would you apply each Type of Cytological techniques?
- Abrasive cytology
- Aspiration cytology
- Exfoliative cytology
buccal mucosal smear
- Abrasive cytology
How would you apply each Type of Cytological techniques?
- Abrasive cytology
- Aspiration cytology
- Exfoliative cytology
breast tumor
- Aspiration cytology
How would you apply each Type of Cytological techniques?
- Abrasive cytology
- Aspiration cytology
- Exfoliative cytology
thyroid nodule
- Aspiration cytology
This/These is/are TRUE of chromatographic tests, except :
- Gas Chromatography-Mass Spectroscopy is the gold-standard for detection and quantitation of volatile compounds.
- Capillary electrophoresis is one example
- Applied mainly to the qualitative detection of drugs of abuse and toxins
- In Enzyme-mediated immunologic technique (EMIT),the drug is covalently attached to an enzyme and separated in a high resistance flow column.
- In Enzyme-mediated immunologic technique (EMIT),the drug is covalently attached to an enzyme and separated in a high resistance flow column.
Among the bodytissues, this is /these are the most stable source/s of postmortem tissue DNA:
Bone
liver
brain
teeth
1st & 4th choices only
2nd & 3rd choices only
all of the above
1st & 4th choices only
The major cause of simultaneous elevation of prothrombin time & activated partial thromboplastin time is a
Coumadin therapy
Coagulation Factor Deficiency
Disseminated intravascular coagulation
Combined Heparin & Coumadin therapy
Heparin therapy
Disseminated intravascular coagulation
A double swab techniqueis the preferred method for collection of DNA in the following condition:
from large pools of blood and bloodstains.
dry biologic fluid
from bitemarks on bodies
biologic fluid deposited on a surface
from bitemarks on bodies
TRUE of neuroleptics and antipsychotic major tranquilizers :
A. Difficult to monitor the levels in serum because of the large number of metabolites of each drug.
B. Reference ranges for serum levels have not been established.
C. used mainly in the treatment of acute schizophrenia used mainly in Tx of schizophrenia,
D. A Block the actions of dopamine and serotonin postsynaptically in the limbic system and motorcortex
E.. 1st, 2nd, & 4th choices only
F. . 2nd, 3rd, & 4th choices only
G. 1st, 3rd, & 4th choices only
H. All of the above
H. All of the above
The following are true of environmental toxins:
A. Acquired hemochromatosis is caused by overingestion of iron.
B. The most common drug of abuse is ethanol.
C. Organophosphates contained in pesticides interfere with neurotransmission by inhibiting the enzyme acetylcholinesterase (AChE).
D. Arsenic is used in rodenticides, herbicides, insecticides, ceramics, production of livestock feed and medicines.
E. 1st & 3rd choices only
F. 2nd & 4th choices only
G. All of the above
G. All of the above
Lead in blood:
A. ls measured in serum and plasma
B. Absorption may occur by inhalation or ingestion.
C. Both organic and inorganic compounds may be highly toxic.
D. Most serious effects occur in the CNS and peripheral nervous system.
E. 1st, 2nd, & 3rd choices only
F. 2nd, 3rd, & 4th choices only
G. 1st, 3rd, & 4th choices only
H. All of the above
F. 2nd, 3rd, & 4th choices only
B. Absorption may occur by inhalation or ingestion.
C. Both organic and inorganic compounds may be highly toxic.
D. Most serious effects occur in the CNS and peripheral nervous system
DNA in the pathology laboratory can be used to
resolve specimen mix-ups
confirm or refute mislabeling of biopsy specimens. true resolved alleged sample switching
evaluate engraftment of marrow after transplantation
1st & 2nd choices only
3rd & 4th choices only
All of the above
All of the above
The immunoglobulin that initiate aspects of the allergic reaction and binds to basophils via the Fe region.
IgG
IgA
IgE
IgM
IgE
Absence of an expected genetic marker in a child when the parent in question appears to be homozygous (one allele present) for the gene:
two-haplotype exclusion
indirect exclusion
reverse homozygosity
1st & 2nd choices only
2nd & 3rd choices only
All of the above
2nd & 3rd choices only
Acute poisoning may be caused by which of the following?
Lead
Iron
Arsenic
carbon monoxide
Cyanide
carbon monoxide
Aspiration biopsy procedure is not indicated for:
the spleen
patients with bleeding disorders
patient at risk for bleeding from chemo-radiation or from cancer itself patient taking blood thinning drugs.
Last 3 choice only
All of the above
All of the above
Differentiate between the following Cytopathology procedures:
- involves examination of spontaneously sledded cells from lining of an organ into a cavity
- examination of cells collected or removed by brushing or artificial mechanical desquamation
- a procedure in which a thin needle is inserted into a swelling to collect a sample of cells or some amount of fluid
- a percutaneous procedure that involves removing a piece of tissue from a lesion or mass, using a hollow needle
- cutting a sample of the suspicious tissue from a mass for purposes of Diagnosis
CORE NEEDLE BIOPSY
- a percutaneous procedure that involves removing a piece of tissue from a lesion or mass, using a hollow needle
Differentiate between the following Cytopathology procedures:
- involves examination of spontaneously sledded cells from lining of an organ into a cavity
- examination of cells collected or removed by brushing or artificial mechanical desquamation
- a procedure in which a thin needle is inserted into a swelling to collect a sample of cells or some amount of fluid
- a percutaneous procedure that involves removing a piece of tissue from a lesion or mass, using a hollow needle
- cutting a sample of the suspicious tissue from a mass for purposes of Diagnosis
EXFOLIATIVE CYTOLOGY
- involves examination of spontaneously sledded cells from lining of an organ into a cavity