Test Tube : Medical Test tube

 Test tube is one such thing which is most used in laboratories.

A typical type of glassware used in laboratories for 

1. storing, 
2. combining,
3. heating small amounts of liquid  solid chemicals . 

It is cylindrical, typically composed of plastic or glass, and features an open top and a rounded bottom.

Important Features:

Material: Usually composed of plastic for single-use items or heat-resistant borosilicate glass (like Pyrex).

Size: Available in a range of sizes, often measuring 10 to 20 cm in length and 1 to 2 cm in diameter.

Design: The circular bottom makes mixing simple and keeps residue from collecting in corners.

 Applications in Medical Laboratories: 

1. Gathering and storing samples such as blood, urine, or chemicals.
2. Conducting chemical reactions in the course of testing.
3. During experiments, materials are heated.
4. Utilising particular centrifuge tubes for centrifugation.

Tubes Used in Pathology:

1. Red Top Tube (simple tube)

Use: To collect serum for use in blood bank tests, biochemistry, and serology.

Note: Following centrifugation, serum and blood clots are separated.

2.Yellow Top Tube (Serum Separator Tube) (Gel + Clot Activator)

Use: Biochemistry tests (such as those for thyroid and liver function)

Note: After centrifugation, serum is separated from cells using a gel barrier.

3.Purple/Lavender Top Tube (Etylenediaminetetraacetic acid, or EDTA Tube)

Use: Haematology tests (e.g., blood film, ESR, CBC)

Note: Blood Binds with calcium to prevent clotting.