lab

Question 1

what are some 24-hour preservatives for urine samples (urine analysis)? 4

Answer 1

1-hydrochloric acid,
2-boric acid,
3-acetic acid
4-thymol

Question 2

what instrument is used to measure specific gravity of urine samples

Answer 2

A refractometer or a reagent strip

Question 3

what is the most commonly isolated bacteria?

Answer 3

E. coli

Question 4

what is the second most commonly isolated bacteria?

Answer 4

klebsiella

Question 5

IMViC test for E. coli

Answer 5

(++–): (+(violet-ring) +(red-color) –(remain yellow) – (remain green )

Question 6

what makes the greenish discoloration of culture media of Pseudomonas aeruginosa?

Answer 6

pyocyanin

Question 7

what is the infective stage and route of Schistosoma

Answer 7

cercaria, skin

Question 8

what is the main pathogenic and diagnostic stage of Schistosoma?

Answer 8

eggs

Question 9

what are the characteristics of Schistosoma eggs?

Answer 9

oval in shape, yellow in color,
shell is thin without an operculum but with a terminal spine. The content is a miracidium.

Question 10

what media is used as a primary plate for N. gonorrhea

Answer 10

> Chocolate Agar (Thayer-Martin agar)
5-10% CO2 condition
- requires X, V factors

Question 11

can gram stain detect Chlamydia?

Answer 11

no, seen be immunofolercance

Question 12

what is the only stage present in the life cycle for Trichomonas?

Answer 12

trophozoite

Question 13

what test is used to identify Candida albicans?

Answer 13

germ tube production test

Question 14

characteristics of bacterial vaginosis

Answer 14

-Clue cells
-Homogenous gray discharge.
- fishy odor
-The PH is greater than 4.5
-Absence of a predominance of Lactobacillus on Gram stain slide.

Question 15

non-treponemal antibody testing

Answer 15

non-specific testing for trepenoma pallidum:
- Uses cardiolipin antigen.
- VDRL
-RPR (Rapid Plasma Reagin, also ART).

Question 16

treponemal testing

Answer 16

specific syphilis test
TPHA: Treponemal Pallidum Heamagglutination Test