TB8 Three Yang Luo

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

TB8 (Sānyángluò, “Three Yang Luo”) is the Group Luo point of the Triple Burner Meridian. It is located 4 cun proximal to TB4, on the dorsal forearm, between the radius and ulna. It activates the channel and alleviates pain, clears heat.

Location

4 cun proximal to TB4, on the dorsal forearm, between the radius and ulna.

Needling

Perpendicular insertion 0.8-1.2 cun.

TCM functions

Activates the channel and alleviates pain, clears heat.

Indications

Deafness, toothache, pain in the arm, paralysis of the upper extremities.

Group Luo

Clinical notes

TB8, the Group Luo point of the three Yang meridians of the arm, is primarily used to activate the channel and alleviate pain along the San Jiao, Large Intestine, and Small Intestine meridians. It is particularly effective for pain, numbness, and paralysis of the arm and hand, especially when affecting the dorsal aspect. It also has a secondary function in clearing heat from these channels, useful for conditions like toothache or deafness.

On the Triple Burner channel

TB8 is one of 23 points on the Triple Burner Meridian. Nearby points:

Frequently asked questions

Where is TB8 located?

TB8 (Sānyángluò) is located 4 cun proximal to TB4, on the dorsal forearm, between the radius and ulna.

What is TB8 used for?

TB8 activates the channel and alleviates pain, clears heat. Common clinical indications include deafness, toothache, pain in the arm, paralysis of the upper extremities.

How is TB8 needled?

Perpendicular insertion 0.8-1.2 cun.

Which meridian is TB8 on?

TB8 is a point on the Triple Burner Meridian (Sān Jiāo).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.