LU8 Jingqu: On the palm-facing thumb side, one B-cun above the wrist crease, in the gap between the radial styloid and radial artery. Landmark schematic; not to scale.

LU8 (Jingqu / Channel Gutter) Acupuncture Point Guide

October 18, 2026

Practitioner Guide from The Acupuncture Supply Co.

LU8 Jingqu belongs to the Lung channel. This Project Lotus guide focuses on reliable surface landmarks, nearby-point distinctions and safe professional assessment.

Quick reference

Point	LU8 — Jingqu
Channel	Lung — Hand Taiyin
Traditional classification	Jing-River; Metal
Region	Radial anterior forearm
Laterality	Bilateral

Location and landmark sequence

On the palm-facing thumb side, one B-cun above the wrist crease, in the gap between the radial styloid and radial artery.

Support the limb so the illustrated surface is accessible. Confirm the thumb or little-finger side for hand and forearm points, or the inner or outer ankle for foot points.
Palpate the named joint, bone or tendon landmarks before estimating a position.
On the palm-facing thumb side, one B-cun above the wrist crease, in the gap between the radial styloid and radial artery.
Check the relationship to nearby points and reassess on the individual patient.

Use the patient’s proportional B-cun measurement. For these forearm locations, the wrist-to-elbow reference interval is twelve B-cun. A centimetre ruler or a universal finger-width estimate cannot replace that assessment.

Distinguishing nearby points

The marker lies beside the radial artery, not on it. LU9 is at wrist level; LU7 is more proximal and has different tendon landmarks.

Traditional context

Jing-River; Metal is the traditional classification used here. Classification helps organise channel theory; it is not evidence that an individual point treats a particular disease. Selection depends on a complete assessment and a coherent treatment principle.

Traditional functions and applications

Within traditional East Asian medicine, this point is described in terms of lung qi descent.

Historically considered for cough, wheeze and throat presentations within an appropriate Lung pattern. These are historical treatment concepts, not proven disease-specific effects of this point alone. Select points from the full assessment rather than a symptom list.

Moxibustion

Classical references caution against moxibustion at LU8. Do not treat heat application as a routine addition at this artery-adjacent point.

Anatomy and essential safety

Forearm tendons, cutaneous nerves and vessels vary between patients. Assess the tissue rather than transferring a fixed image distance. Avoid provoking electric pain, numbness or a sharp neurological sensation. The radial artery is a specific hazard: identify its course and avoid puncturing it.

Inspect skin, circulation and sensation; avoid infected, ulcerated or otherwise unsuitable tissue.
Review relevant medication, bleeding risk, pregnancy, surgery and previous reactions.
Use sterile single-use needles, appropriate infection control and safe sharps disposal.
Choose depth, angle and stimulation through accredited training and patient-specific anatomical assessment.

When assessment takes priority

A hot swollen limb with fever, new weakness, persistent numbness, significant trauma or an infected wound needs medical assessment. Acute chest pain, collapse or severe breathlessness requires emergency care; a traditional channel association must never delay referral.