Laboratory Measurement Of Prolactin

13 Questions | By Johnson_1234 | Updated: Mar 21, 2022 | Attempts: 362

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Laboratory Measurement Of Prolactin - Quiz

You have 20 mins to answer all questions. Please choose one answer from each of the following questions.

Questions and Answers

1.

Which one of the following hormones would increase in response to dehydration?
- A.
  
  Anti-diuretic hormone
- B.
  
  Oxytocin
- C.
  
  Thyrotropin-releasing hormone
- D.
  
  Adrenocorticotropic hormone
2.

The ________________ half of the pituitary gland is of neural origin and is an extension of the brain.
- A.
  
  Anterior
- B.
  
  Posterior
3.

Which of the following hormones is not released into the hypothalamic-pituitary portal system?
- A.
  
  Growth hormone-releasing hormone
- B.
  
  Prolactin-releasing peptide
- C.
  
  Adrenocorticotropic hormone
- D.
  
  Thyrotropin-releasing hormone
4.

Prolactin is mainly secreted by the ______________ pituitary gland.
- A.
  
  Posterior
- B.
  
  Anterior
5.

Which of the following is not a function of prolactin?
- A.
  
  Stimulate breast development and milk production in females
- B.
  
  Maintains corpus luteum during pregnancy
- C.
  
  Involved in testicular function in males
- D.
  
  Stimulate the ovary by promoting FSH and LH production
6.

There are _____ major variants of circulating prolactin.
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  4
7.

Which is the biologically active form of prolactin variant?
- A.
  
  Monomeric prolactin
- B.
  
  Big prolactin
- C.
  
  Big-big prolactin
8.

What does the gel filtration result show?
- A.
  
  The sample consists of mainly monomeric prolactin.
- B.
  
  The sample consists of mainly big prolactin.
- C.
  
  The sample consists of mainly big-big prolactin.
- D.
  
  The results indicates that the patient is hyperprolactinemic.
9.

Which of the following is not a symptom of hyperprolactinemia in females?
- A.
  
  Anovulation
- B.
  
  Irregular period
- C.
  
  Amenorrhoea
- D.
  
  Fever
- E.
  
  Headache
10.

All the following are common causes of hyperprolactinemia EXCEPT
- A.
  
  Benign pituitary tumour - prolactinoma
- B.
  
  Dopomine antagonist drugs
- C.
  
  Primary hypothyroidism
- D.
  
  Primary hyperthyroidism
11.

What is the protocol used for prolactin PEG screening?
- A.
  
  Mixed equal volume of (25% w/v) PEG with serum. Centrifuged the mixture at 14000 rcf for 10 mins.
- B.
  
  Mixed equal volume of (50% w/v) PEG with serum. Centrifuged the mixture at 14000 rcf for 10 mins.
- C.
  
  Mixed equal volume of (25% w/v) PEG with serum. Centrifuged the mixture at 14000 rpm for 10 mins.
- D.
  
  Mixed equal volume of (25% w/v) PEG with serum. Centrifuged the mixture at 14000 rcf for 5 mins.
12.

The prolactin-PEG result must be multiplied by 2 in order to obtain to final concentration.
- A.
  
  True
- B.
  
  False
13.

Reflex testing will be performed on all prolactin cases.
- A.
  
  True
- B.
  
  False