Serum: meaning, definitions and examples

Typically used in medical or skincare contexts to refer to a clear, liquid substance with concentrated ingredients. In medicine, it can denote the liquid part of blood without blood cells. In skincare, it refers to a product with active ingredients to target specific skin concerns.

• The doctor ordered a blood serum test to check for antibodies.
• She applied a vitamin C serum to her face in the morning.

Commonly used in literary and pharmaceutical contexts. It traditionally refers to a magical or medicinal potion believed to cure ailments or extend life. In modern usage, it might also refer to a sweet-flavored liquid containing medicine or health supplements.

• The tale spoke of an ancient elixir that could grant immortality.
• He mixed the herbal elixir for her to drink and relieve her cold symptoms.

Often seen in medical, pharmaceutical and skincare contexts. It refers to a small sealed vial containing a liquid, typically a dose of medication or a skincare treatment. These are generally used for single-use applications.

• The nurse broke the ampoule to administer the medication.
• She used an ampoule of hydrating serum after her facial treatment.

Frequently used in skincare and fragrance contexts. This word refers to a concentrated liquid that captures the essential qualities of an ingredient. In skincare, it's usually a lightweight product used for hydrating and preparing the skin to absorb other treatments.

• She used a rose essence to give her skin a fresh and dewy look.
• The perfume had an essence of sandalwood and jasmine.

Serum refers to the clear, yellowish fluid that remains after blood has clotted. It is used in medical and scientific contexts, especially in diagnostics and research.

• The doctor examined the patient's serum to check for antibodies.
• Researchers are studying the serum to understand the spread of the infection.

Plasma is the liquid component of blood in which blood cells are suspended. It is often used in medical settings, especially in treatments like plasma transfusions and in the study of blood components.

• The hospital is low on plasma and is asking for donations.
• Plasma from recovered patients can be used to treat those who are seriously ill with the virus.

Antibody solution refers to a liquid containing antibodies, often used in medical treatments or laboratory tests to detect, measure, or neutralize pathogens.

• The laboratory used an antibody solution to detect the presence of the virus in the sample.
• An antibody solution was administered to the patient to help fight the infection.