Skin puncture - specimen collection, Biology

Assignment Help:

Skin puncture: skin puncture is usually done when small volume of blood is needed (e.g., blood glucose test) to avoid unnecessary venipuncture.

However, skin puncture in time consuming and have greater risk of infections than venipuncture because fingertip is more difficult to sterilized than the anticubital fossa. In an adult or grown child, blood may be collected by puncturing the tip of the finger or by piercing the earlobe. In an infant of less than 1 year of age, the lateral and medial planter surface of the foot should be used for skin puncture. 

Area should be sterilized by 70 % isopropanol, then all alcohol allowed to dry, and skin is quickly punctured by a lancet. Massage of the finger to stimulate blood flow should be avoided because it causes flow of debris and tissue fluid, which does not have the same composition as plasma have. Blood may be collected by a capillary blood tubes by capillary attraction. Filter paper is used for collection of capillary blood used in neonatal screening.

 


Related Discussions:- Skin puncture - specimen collection

Explain the deficiency and toxicity of vitamin a, Explain the Deficiency an...

Explain the Deficiency and Toxicity of vitamin A? Who defines VAD as tissue concentrations of vitamin A low enough to have adverse health consequences even if there is no evide

Explain citric acid cycle, Explain citric acid cycle In  the citric aci...

Explain citric acid cycle In  the citric acid cycle, the oxaloacetate is first condensed with acetyl CoA, and  then regenerated  as  the cycle  is  comp!eted.  But these  react

Concerning the number of hosts how are parasites classified, Q. Concerning ...

Q. Concerning the number of hosts how are parasites classified? The Parasites that require only one host are called as monoxenous parasites. The Parasites that need more than o

Give the biological effects of aflatoxin, Q. Give the biological effects of...

Q. Give the biological effects of aflatoxin and List the various natural toxins present in food? Biological effects of aflatoxin include hepatotoxicosis, carcinogenesis and liv

What is the difference between facilitated and diffusion, Q. What is the di...

Q. What is the difference between facilitated and simple diffusion? Facilitated by which kind of molecule does the term "facilitated" mean? Simple diffusion is the direct passa

Describe the term intellectual property rights, Question 1: Describe th...

Question 1: Describe the term Intellectual Property Rights. Show the difference between Patents, industrial designs, and trademarks. Define the term Intellectual Property

Geothermal energy, It is that energy which lies, embedded within earth's cr...

It is that energy which lies, embedded within earth's crust. In some places heated water comes out through the surface of earth as hot spring or steams. This hot geothermal water o

What do you mean by excretion, Q What is the excretion? Excretion in Ph...

Q What is the excretion? Excretion in Physiology is the procedure of elimination of metabolic wastes and other toxic substances from the body.

How is opening and closing of stomata controlled, How is opening and closin...

How is opening and closing of stomata controlled? Describe a) Why is the length of a food chain in an ecosystem generally limited to 3 - 4 trophic levels? Explain with an examp

Explain plant sources of natural colourants, Plant sources Although the...

Plant sources Although there is a multitude of colours in the plant kingdom, their extraction and use in food systems is not an easy task. Unless the colourants have some outst

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd