A 21-gauge needle is commonly used for drawing blood for a chemistry profile. This size balances the need for sufficient blood flow while minimizing discomfort for the patient. However, a 22-gauge needle may also be used, depending on the patient's veins and specific laboratory requirements. Always ensure to follow your facility's protocols for blood draws.
A needle with a size of 0000 (4 zeros), also known as a 0000 gauge needle, has the largest diameter. These needles are typically used for thick materials like leather or heavy-duty fabrics.
The smallest commonly used needle in terms of diameter is the 30-gauge needle. It has an inner diameter of about 0.31 mm (0.012 inches) and is often used for delicate procedures such as administering certain vaccines or performing subcutaneous injections in pediatric patients. Smaller needles, like those used for specialized applications in research or specific medical tasks, may exist, but 30-gauge is the smallest frequently encountered in clinical settings.
in chemistry
Organic chemistry
The needle length typically used for intradermal injections is 1/4 to 1/2 inch. This shorter length allows for precise and shallow delivery of medication into the dermis layer of the skin. It is important to use a smaller gauge needle (higher number) to reduce pain and trauma during the injection.
Depends how it is drawn- Butterfly or straight stick 19 g and 21 G are the normal straight stick. If you use a buterfly to draw the lab then they are ususally 21 or 23 Gauge. (Remember the bigger the gauge number the smaller the needle width). The smaller the needle width the higher the chance of hemolization (cell squishing)
Depends how it is drawn- Butterfly or straight stick 19 g and 21 G are the normal straight stick. If you use a buterfly to draw the lab then they are ususally 21 or 23 Gauge. (Remember the bigger the gauge number the smaller the needle width). The smaller the needle width the higher the chance of hemolization (cell squishing)
Mine was done with a 16g needle (:
Gauge is the term that indicates the diameter of the needle. Most commonly the needles that are used for medical purposed range from 7 Gauge to 33 Gauge, according to the Stubs scale. 7 Gauge needle will have the largest diameter while as the number increase, the diameter decreases. Therefore the 33 Gauge needle has the smallest diameter. So a 26 Gauge needle will have a smaller diameter than that of the 18 Gauge needle.
needle- is used for sewing.
Medical procedures
In a needle cricothyroidotomy, the doctor uses a 12- or 14-gauge catheter and needle assembly.
20-22
For an 8-year-old, a 22 to 25 gauge needle is typically used for injections, depending on the type and viscosity of the medication being administered. A 22 gauge needle is often preferred for vaccines, while a finer 25 gauge needle may be suitable for other types of injections. It's important to consider the child's size and comfort when selecting the appropriate gauge. Always consult a healthcare professional for specific recommendations.
A green-top tube containing lithium heparin or a red-top tube without anticoagulant are commonly used for collecting blood samples for a chemistry profile.
Medical uses, scientific uses, piercing uses.
Usually 24 number needle is used by doctors. For baby you can use 26 number needle and for oily injections you can use 22 number needle.