Abstract
Aim: The study aims to analyze the specific gravity with the hemoglobin of the blood.
 Introduction: The ratio of the density of a substance to the density of the water at a specified temperature and pressure is known as specific gravity. Blood is a fluid connective tissue that delivers oxygen and nutrients to the cells and transports metabolic waste away from the cells. Red blood cells are biconcave disc-shaped cells produced from bone marrow. It contains proteins that transport oxygen from the lungs to all the parts of the body. The term heme reforms to the iron-containing porphyrin. The aim of the study was to analyse the specific gravity of Hemoglobin of the blood.
 Materials and Methods: 10 random blood samples were collected from the patients in Saveetha Dental College. Then the samples were centrifuged and the blood-specific gravity and hemoglobin were analyzed from the sample using a multi-reagent strip and the specific gravity and hemoglobin was determined.
 Results and Discussion: The mean specific gravity value of age group 21 - 30 years is 1.015, the mean specific gravity value of age group 31 - 40 years is 1.018, the mean specific gravity value of age group 41 - 50 is 1.016, and the mean specific gravity value of age group more than 50 years is 1.020. The mean specific gravity value of females is 1.01750 and the mean specific gravity value of males is 1.01750. The mean Hb value of females is 11.67 and the mean Hb value of males is 14.68.
 Conclusion: The value of mean specific gravity is slightly increased among different age groups and the mean Hb value is also slightly increased with different age groups. Between genders mean specific gravity is equal to both genders and mean Hb value is more in males compared with females.
Highlights
The ratio of the density of a substance to the density of the water at a specified temperature and pressure is known as specific gravity
There is an increase in mean specific gravity value corresponding to age but it is not increasing significantly
It was well correlated with the study in which the specific gravity of the population aged between 19-58 years ranges from 1.0652 1.0590 [11]
Summary
The ratio of the density of a substance to the density of the water at a specified temperature and pressure is known as specific gravity. The specific gravity of blood at 37°C ranges from 1.0475 - 1.0537 [1]. Blood contains mainly four compositions namely plasma, red blood cells, white blood cells, and platelets. The strawcolored liquid part of the blood that contains no red blood cells, white blood cells, platelets, or other cellular components is defined as plasma. It accounts for 55% of the blood. Plasma helps to maintain blood pressure and volume, supply proteins for blood clotting and immunity and helps to maintain proper pH balance in the body [2]
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