A Short Description Of Various Human Body Fluids And Parts That Can Be Used For Poison Testing

body fluids

Amniotic fluid: Amniotic fluid is the liquid that fills the amniotic sac, which contains the fetus.

Aqueous humor: The watery substance that fills the gap between the iris and cornea of the eye is called aqueous humor.

Bile: Bile is the viscous, yellow-green fluid that the liver secretes into the intestine through the gall bladder.

Blood: Blood is a mixture of liquid and solid components. Water, salts, and protein constitute the liquid component, known as plasma. Plasma is the majority of blood. Red blood cells, white blood cells, and platelets constitute the blood’s solid component. An average adult should have 4 to 5 liters of blood in their body. Typically, venous blood is drawn. To lyse the cells before an examination if whole blood is to be examined, the sample should be drawn, combined with the proper anticoagulant, and then frozen.

Blood Cells: White and red blood cells are referred to as erythrocytes (lymphocytes, leucocytes, platelets, etc.). All may be extracted from recently drawn blood using the proper techniques.

Breast milk: Breast milk is a fluid that nursing mothers generate that is high in fat and protein. Colostrum, the earliest phase of breast milk, is particularly high in protein.

Bronchoalveolar lavage (BAL): BAL is achieved by cleaning the bronchi/alveoli with a suitable solution and aspirating the resultant fluid.

Calculi (stones): Hard crystalline deposits known as calculi (or “stones”) occur in a variety of bodily cavities, including the kidney. 

Cerebrospinal fluid (CSF): Cerebrospinal fluid (CSF), which surrounds the components of the central nervous system, is a plasma ultrafiltrate (CNS). It is extracted from the spinal cord through a lumbar puncture (needle aspiration) and is typically collected in sterile tubes.

Cord blood: Cord blood is blood taken from the umbilical cord during delivery. To reflect neonatal blood instead of placental blood, venous cord blood is often taken. Depending on the amount available, plasma or serum could be obtainable.

Dialysis fluid: The fluid that is still present or recovered after dialysis is known as dialysis fluid (extracorporeal or peritoneal).

Exhaled (expired) air: Compared to ambient air, exhaled (expired) air typically has less oxygen, more carbon dioxide, and more water vapor, but it may also contain other volatile metabolic products.

Gastric aspirate: A gastric aspirate is an acidic, aqueous fluid that is aspirated from the stomach and contains food, digestive enzymes, and other substances.

Gastric lavage: By cleaning the stomach with the right solution and aspirating the resultant fluid, a sample known as gastric lavage is obtained.

Feces: The dark, semisolid waste products of digestion are known as feces.

Lymph: A yellowish fluid produced by the lymph glands is called lymph.

Nasal Swabs: Fluid from within the nose is collected on cotton swabs to make nasal swabs.

Plasma: The liquid component of blood is called plasma.

Peritoneal fluid: Fluid that builds up in the peritoneum is known as peritoneal fluid.

Oral fluid: Oral fluid is a combination of saliva, gingival crevicular fluid (fluid from the tooth/gum margin), cellular debris, blood, mucus, food particles, and other substances gathered from the mouth.

Saliva: Saliva is the viscous, transparent secretion of the mucous glands of the mouth. Although it differs from plasma in composition, it does include certain digestive enzymes.

Semen: Semen is produced by the testes and the prostate gland, and consists of seminal fluid, which may be obtained from semen by centrifugation, and spermatozoa.

Synovial fluid: the lubricating liquid that fills the synovium is known as synovial fluid and is transparent and viscous (the membrane that surrounds a joint and creates a protective sac).

Serum: When entire blood clots, a fluid called “serum” is formed. To limit excessive blood loss from a small cut, clotting is pre-programmed into the blood’s constituent parts.

Stomach contents: Stomach contents may be:

  1. Gastric Aspirate, 
  2. Gastric Lavage, 
  3. Vomit, Or 
  4. The Residue In The Stomach At Autopsy.

Sweat: Sweat is a transparent, salty liquid that is generated by skin glands.

Tears: The tear ducts of the eye produce transparent tears and watery liquids.

Tissue: Sometimes samples of tissue from an aborted fetus and/or placenta are offered for examination. A biopsy sample is a tiny fragment of tissue taken using a specialized sampling method.

Urine: The kidneys generate urine, a yellow or yellow-green fluid. Among other metabolic products, it largely consists of salts, urea, creatinine, and water.

Vaginal Fluid: Vaginal discharge is a clear, white, or off-white fluid that comes out of the vagina. 

Vitreous humor: The clear jelly-like substance that fills the inside of the eyeball.

Vomit: Vomit is a chemical reflection of stomach aspirate.

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