- 1 What test identifies bacteria and determines the antibiotic to which it is sensitive?
- 2 Which type of specimen must be handled and analyzed stat?
- 3 Which specimen is ideal for most urine tests *?
- 4 Which of the following urine specimens is best to use for hCG testing?
- 5 What is the antibiotic sensitivity test used for?
- 6 How is antibiotic sensitivity test done?
- 7 What blood tube colors are for which test?
- 8 What are the general principles of specimen collection?
- 9 Which site should you avoid for venipuncture?
- 10 What should you not do before a urine test?
- 11 How long can urine sit before being tested?
- 12 What does the 24-hour urine test show?
- 13 Why is hCG not being detected in urine?
- 14 Is hCG higher in blood than urine?
- 15 Why is hCG detected in urine?
What test identifies bacteria and determines the antibiotic to which it is sensitive?
Nonblood Specimens and Tests
|CSF is the abbreviation for fluid that comes from the:||spinal cavity|
|Clean catch refers to the collection of urine||after cleaning the genital area|
|A test that identifies bacteria and the antibiotics that can be used against them is the:||C&S test – Culture and sensitivity|
Which type of specimen must be handled and analyzed stat?
Nonblood Specimens and Test
|which type of specimen must be handled and analyzed STAT?||cerebrospinal fluid|
|the most frequently analyzed nonblood specimen is?||urine|
|what can happen to urine components if not processed in a timely fashion?||bilirubin breaks down, cellular elements decompose, and bacteria multiply|
Which specimen is ideal for most urine tests *?
Laboratory urine specimens are classified by the type of collection conducted or by the collection procedure used to obtain the specimen. Random Specimen This is the specimen most commonly sent to the laboratory for analysis, primarily because it is the easiest to obtain and is readily available.
Which of the following urine specimens is best to use for hCG testing?
A first morning urine specimen is preferred since it generally contains the highest concentration of hCG; however, urine specimens collected at any time of the day may be used. Urine specimens exhibiting visible precipitates should be centrifuged, filtered, or allowed to settle to obtain a clear specimen for testing.
What is the antibiotic sensitivity test used for?
An antibiotic sensitivity (or susceptibility ) test is done to help choose the antibiotic that will be most effective against the specific types of bacteria or fungus infecting an individual person.
How is antibiotic sensitivity test done?
A plastic strip impregnated with different concentrations of antibiotics is placed on a growth medium, and the growth medium is viewed after a period of incubation. The minimum inhibitory concentration can be identified based on the intersection of the teardrop-shaped zone of inhibition with the marking on the strip.
What blood tube colors are for which test?
The tests each bottle is used for are the same: the purple one is for cell count, the yellow one is for electrolytes, albumin and LDH, the grey one is for glucose, and blood culture bottles can be used for fluid cultures.
What are the general principles of specimen collection?
Collected in a way that minimises contamination. Collected in a way that reduces health and safety risk to all staff handling the specimen (including laboratory staff) Collected using the correct equipment. Documented clearly using appropriate forms.
Which site should you avoid for venipuncture?
VENIPUNCTURE SITE SELECTION: Certain areas are to be avoided when choosing a site: Extensive scars from burns and surgery – it is difficult to puncture the scar tissue and obtain a specimen. The upper extremity on the side of a previous mastectomy – test results may be affected because of lymphedema.
What should you not do before a urine test?
For 24 hours prior to collecting the specimen, you should avoid strenuous exercise as well as the following substances and drugs:
- Vitamin B.
How long can urine sit before being tested?
Storing a urine sample Do not keep it for longer than 24 hours. The bacteria in the urine sample can multiply if it is not kept in a fridge. If this happens, it could affect the test results.
What does the 24-hour urine test show?
A 24 – hour urine collection helps diagnose kidney problems. It is often done to see how much creatinine clears through the kidneys. It’s also done to measure protein, hormones, minerals, and other chemical compounds.
Why is hCG not being detected in urine?
In addition to testing too early, the following factors can cause a false negative with a urine HCG test: drinking lots of water so that the urine is very diluted. getting too much or too little urine on the test strip. testing with urine late in the day when it may be weaker.
Is hCG higher in blood than urine?
Blood test results are about 99 per cent accurate and can detect lower amounts of hCG than urine pregnancy tests.
Why is hCG detected in urine?
The human chorionic gonadotropin ( hCG ) test is done to measure the amount of the hormone hCG in blood or urine to see if a woman is pregnant. HCG may also be measured to see if cancer of the ovaries or testicles is present.