Bladder
BL21
胃俞 · Weishu
Stomach Shu
Stomach transport point on the lower thoracic back.
Back-shu of the Stomach
Use caution
System
- Channel
- Bladder (BL)
- Element
- Water
- Yin or yang
- yang
- Organ system
- Bladder
- Region
- Back
- Limb rule
- Foot Taiyang
Where it is
Two finger-widths lateral to the spine, about level with the twelfth thoracic vertebra, just above the floating-rib area.
Nearby: Upper lumbar region. Kidneys are deeper and lower. Mild pressure.
Traditionally said to
Back-shu of the Stomach. Paired in study with Ren12 and ST36 for middle-burner patterns.
What people look up
Acupressure
Mild pressure, 30–45 seconds.
When not to press: Skip sharp back pain or pain that wraps to the abdomen.
About 30–90 seconds is the usual window, unless the step above is shorter. Stop if pain, dizziness, or anything unusual shows up.
Licensed practice only
Needle depth, angle, electroacupuncture
Textbook language for students. Not instructions. A cun is a body-inch on that person, not a ruler inch. Do not needle yourself.
Depth
Often 0.5–1 cun oblique toward the spine. Manuals differ at this level because the lung is higher but the kidney is nearer. Confirm.
Angle
Oblique medial.
Electroacupuncture
Introductory charts rarely assign a standard electroacupuncture setting here. Clinics that use current choose frequency and intensity for that person. No milliamp figure is given, because copying one would be misleading.
Nearby on this channel
Spleen Shu
Spleen transport point for tired digestion.
Use caution
San Jiao Shu
San Jiao transport point at the low ribs.
Use caution
Gallbladder Shu
Gallbladder transport point, just below the liver shu.
Use caution
Kidney Shu
The low-back point level with the waist, kidney shu.
Use caution
Herbs often paired for a similar pattern
Tags
weishu · stomach shu