What it’s for
The right tool for mixing and transferring liquid between vials — and the syringe an intramuscular injection needs, since you can fit a longer needle.
What to check in the listing
BD Luer-Lok (the 309657 box) and Terumo are the two hospital brands, and they cost about the same per syringe as the no-name packs when you buy the box of 100 or 200 — smoother plungers, no leaks at the tip. Individually wrapped and sterile is non-negotiable; luer-lock, not slip, so the needle can't pop off.
At a glance
TypeLuer syringe
Capacity3 mLCapacity is how much liquid the barrel holds. Smaller barrels have more space between the lines, so small amounts are easier to read. Glossary MarkingsmLMarkings are the scale printed on the barrel. U-100 means 100 units to the millilitre, so one unit is 0.01 mL; a mL scale is marked in tenths or fifths of a millilitre, depending on the barrel. Glossary Smallest line0.1 mLSmallest line is what one line on the barrel is worth. Half-unit lines let you read 0.005 mL; a 1 mL syringe is usually marked in 2-unit steps. Glossary Needle connectionLuer-lockNeedle connection is how the needle attaches. Fixed means it is built in (least dead space). Luer-lock screws on and cannot pop off. Luer-slip pushes on. None means there is no luer fitting at all — a pen needle screws onto the pen's own thread. Glossary Needle includedNo
TipNoneTip is the shape of the needle's point. A blunt tip is far less likely to stick you while mixing and drawing up, but it is still a sharp that can go through skin under force. Never for injecting.
Dead spaceStandardDead space is the liquid left in the hub after the plunger bottoms out. Fixed-needle insulin syringes have almost none. Glossary Used forMixing vials, Drawing up, Measuring larger amounts, Nasal spraysUsed for lists the situations this product is for; the decision tool and the Finder match on these.
PriceBudgetPrice tier is the rough position within its category, not a live price: budget is the cheapest sensible option, premium costs more for a reason the page explains.
TravelCarry-on friendlyTravel says whether it is practical to fly with: carry-on means it goes through security without fuss.
SterileYesSterile means individually sealed and sterile until opened; anything that touches the inside of a vial or your skin should be.
Pack100Pack is how many come in the listing this site links to; it is shown only where every store's listing gives the same count. Check it against the listing, since photos often show ten and ship one.
ReusableNo
Specifications above were recorded from the Amazon listing on 2026-09-03. Listings change hands: open the listing for its current description, price and availability.
If the numbers in a syringe listing don't mean much yet, read Luer-lock vs luer-slip syringes: which to buy first.
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