Safety Lancet Gauge and Depth: Reading Specifications
Read safety lancet gauge and depth together, alongside the model and item reference. Gauge identifies the needle size designation; penetration depth is a separate specification, normally stated in millimetres. A request for a “21G safety lancet” leaves the depth and exact item open.
For distributor and OEM sourcing, start with a complete catalogue row. The Linkfar Medical safety lancet manufacturer and OEM page links the model range. Use the selected product's specification and instructions for use when preparing the enquiry.
What do G and mm tell a buyer?
| Field | What to record | What remains to be checked |
|---|---|---|
| Needle gauge, marked G | The stated gauge for the exact needle item | Depth, model, activation design and applicable product documents |
| Penetration depth, marked mm | The listed depth for that configuration | Gauge and item reference; for an adjustable device, the specified settings |
| Item reference | The supplier's complete item code and specification version | Whether the sample, quotation and label identify that same item |
Keep the units with the values. Do not enter a gauge value in the depth field or treat a millimetre value as a gauge. If a catalogue covers needle and blade configurations, retain its terminology and identify which design the row describes.
Reading PA2 gauge and depth examples
The PA2 Duo Springs product table lists the following item configurations. These examples show how to retain the fields in a sourcing record; confirm the current specification for the item being quoted.
| Model | Item reference | Needle gauge | Listed depth |
|---|---|---|---|
| PA2 Duo Springs | 11-2122 | 21G | 2.2 mm |
| PA2 Duo Springs | 11-2322 | 23G | 2.2 mm |
| PA2 Duo Springs | 11-3015 | 30G | 1.5 mm |
The 21G and 23G PA2 rows have the same listed depth but different item references and gauges. Copy the complete row into an RFQ so the supplier can identify which configuration you mean.
Does 21G always mean the same depth?
A 21G designation does not establish one universal penetration depth. Linkfar's PA2 item 11-2122 is listed as 21G / 2.2 mm, while SARSTEDT item 85.1016 is listed as 21G / 1.8 mm. The examples identify separate catalogue configurations and do not establish that the devices are interchangeable.
Apply the same check when comparing two 23G items: record both depths, activation designs and item references before asking about an alternative. If a sample is identified only by a colour or a shortened model name, ask for its full reference and specification.
Keep clinical suitability separate from the catalogue comparison
Gauge and depth identify a proposed configuration. They do not, on their own, establish the blood quantity obtained, pain experienced or suitability for a particular test or person.
For blood glucose monitoring, the FDA's monitoring-device guidance directs users to the meter and test-strip instructions. Give the responsible clinical or technical reviewer the actual test requirements and the proposed lancet's documents. Record unresolved requirements before treating a catalogue item as an accepted component.
Match the specification to the sample and quotation
Use one reference record for the model, item code, gauge and depth. Add the specification date or revision, label and instructions-for-use version, sample identifier and proposed pack quantity. Check the same fields when reviewing the quotation.
Include the accompanying instructions in that review. The FDA's device labeling overview explains that labeling can include material accompanying a device. A product photograph or gauge printed on a box does not replace the document set for the selected item.
For artwork and private-label inputs, use the OEM safety lancet sourcing guide. Keep box and carton quantities in the separate fields described in the packaging specifications guide.
Send an item-specific specification enquiry
Send the model, item reference, gauge, penetration depth, destination market and required quantity to info@linkfarmedical.com. Include the proposed application and any test-document requirements for review. If you need an alternative configuration, identify the field you want to change and ask for its corresponding item record.
