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Stomach Acid Test

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Summary
What is Stomach Acid Test?
Alternative names
How the Test is Performed
How to Prepare for the Test
How the Test Will Feel
Why the Test is Performed
Normal Results
What Abnormal Results Mean
Risks
References
Disclaimer

What is Stomach Acid Test?

The stomach acid test is used to measure the quantity and acidity of stomach contents.

Alternative names

Gastric acid secretion test

How the Test is Performed

After not eating for a period of time, fluid is all that remains in the stomach. This fluid can be removed via a tube inserted through the esophagus (food pipe). To test the ability of cells in the stomach to secrete acid, gastrin may be injected just under the skin, into a muscle, or into a vein. The stomach contents are then removed and analyzed. Another test involves insulin-induced hypoglycemia . Enough insulin is given under the skin or through a vein to cause the blood sugar to de...

What is Stomach Acid Test?

The stomach acid test is used to measure the quantity and acidity of stomach contents.

Alternative names

Gastric acid secretion test

How the Test is Performed

After not eating for a period of time, fluid is all that remains in the stomach. This fluid can be removed via a tube inserted through the esophagus (food pipe).

To test the ability of cells in the stomach to secrete acid, gastrin may be injected just under the skin, into a muscle, or into a vein. The stomach contents are then removed and analyzed.

Another test involves insulin-induced hypoglycemia. Enough insulin is given under the skin or through a vein to cause the blood sugar to decrease. This causes the vagus nerve to stimulate the release of gastrin. After a short time, the stomach contents are removed and analyzed.

How to Prepare for the Test

You will be asked not to eat or drink for 4 - 6 hours before the test.

How the Test Will Feel

You may notice some discomfort or a gagging feeling as the tube is passed through your nose or mouth, and down your esophagus.

Why the Test is Performed

This test may be used for a number of reasons:

To check if anti-ulcer medications are working
To check if material is coming back up from the small intestine
To evaluate the cause of malabsorption of nutrients from the intestines
To test for the cause of ulcers

Normal Results

Normally the volume of the stomach fluid is 20 to 100 mL and the pH is acidic (1.5 to 3.5). In some situations, these numbers are converted to actual acid production in units of milliequivalents per hour.

Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

What Abnormal Results Mean

Decreased levels of stomach acid or gastrin can cause malabsorption.
Increased levels of gastrin can cause increased secretion of acid and may lead to ulcers (Zollinger-Ellison syndrome).
Ulcers may be caused by delayed emptying or increased secretion of acid.
The presence of bile in the stomach indicates material is backing up from the small intestine ( duodenum). This may happen after a partial gastrectomy.

Risks

There is a slight risk of the tube being placed through the windpipe and into the lungs instead of through the esophagus and into the stomach. The health care provider will be sure the tube is correctly placed before continuing with the test.

If the test includes injection of insulin, there is a risk of bringing on symptoms of low blood sugar.

References

Cecil Medicine

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial policy, editorial process and privacy policy. A.D.A.M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health on the Net Foundation (www.hon.ch). The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2008 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

Review Date: .11/2/2008

Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.11/2/2008

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2
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Passion flower

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Stomach acid test

The stomach acid test is used to measure the quantity and acidity of stomach contents.
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Esophageal pH monitoring

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Secretin stimulation test

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Gastric suction

...cedure that empties the contents of the stomach. It may be done for tests, or to remove materials such as poisons.
Esophageal manometry

Esophageal manometry is a test to measure the pressure inside the lower part of the esophagus.
Gastrin

...ne that regulates acid secretion in the stomach. It is produced by special cells in the stomach. Small amounts of ...
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Distended stomach
- Posted On March 27, 2008 07:27:50 AM
  ...e been having really bad issues with my stomach for the past couple of months. My doctior wants to do an endoscopy on me to see if I have damaged my intestines. ugh. Does anyone else have really... Read More
- Posted On March 27, 2008 07:31:31 AM
  ... out things that will build acid in the stomach such as gum, any fizzy drink etc and build up of acid with no other foods to counteract it can cause ulcers. So try neutral foods to keep the bala... Read More
Esophageal Spasm/ Acid Reflux?
- Posted On January 3, 2008 12:26:23 PM
  ... these symptoms. I started getting mild acid reflux from eating certain things as my weight crept up. Everyone's body reacts differently. If it bothers you again, I'd have it checked by a do... Read More
- Posted On January 3, 2008 02:16:37 PM
  ... month with unbearable pain. They even tested my gall bladder mine was so bad. I take lortab for the nights when the pain is too intense and the acid blockers don't help. My doctor never sugg... Read More
my poor stomach
- Posted On July 8, 2008 08:00:02 PM
  ...g issues, it tends to fluctuate with my stomach issues. My main problems are gas/bloating, switching between constipation and diarhhea, and just plain slow digestion (food sits in my stomach fo... Read More
- Posted On July 9, 2008 08:46:24 AM
  ... for my vague and terrible life-ruining stomach problems, I have first hand knowledge of how dismissive doctors can be, especially to women, especially when it comes to digestive issues. My firs... Read More
LIPO DISSOLVE/Cosmetics!!!
- Posted On July 1, 2008 10:55:14 AM
  ... im like ok!! so shes gonna do it on my stomach while i watch to learn im kinda scared and iv heard of ppl passing out and screaming and stuff so yeah but iv also seen how it works and it freaki... Read More
- Posted On July 1, 2008 10:58:43 AM
  I did my boobs, but it was for vanity. I admitt it. I love them. I think you should, although don't consume yourself with that stuff. Don't think you can gain some weight then get it removed.. ... Read More
cramps & cardio
- Posted On November 16, 2007 10:41:07 AM
  What kind of cramps? Stomach, leg? Stomach cramps (side stiches) are usually a sign that you are going faster than your heart/lungs can keep up with (I think it is a pain in the diaphragm from u... Read More
- Posted On November 16, 2007 11:03:20 AM
  I get stomach cramps while running if I drink too much water beforehand. I've got a sensitive stomach, so I need to plan my water/food intake for exactly 1 hour before I start working out. A minu... Read More
lactose intolerance?
- Posted On March 17, 2009 04:48:24 PM
  ...ugh. I have always had sort of nervous stomach, and when I get nervous feel somewhat nauseous, and I was (and am) under stress at work that was making me feel too nervous to eat sometimes when ... Read More
- Posted On March 18, 2009 12:10:31 PM
  ...se intolerance happens when the small intestine does not make enough of the enzyme lactase. Babies' bodies make this enzyme so they can digest milk, including breast milk. Before humans became d... Read More
New puppy- does this sound like worms possibly?
- Posted On November 12, 2008 09:10:06 AM
  ...he started throwing up what looked like stomach acid and was very mopey. Late monday night / early tuesday she had a few boughts of diarrhea but seemed perkier and last night she was playing lik... Read More
- Posted On November 12, 2008 09:18:27 AM
  ...upposed to be de-wormed because their intestines naturally get them somehow (sorry if I'm vague, the vet explained it to me like 8 months ago when I got my puppy and I don't quite remember). Wor... Read More
Increase Alkaline Food in Your Diet
- Posted On June 11, 2008 08:03:35 AM
  ... in the body caused by our increasingly acidic diets. I'd love to hears others opinions on the subject. A couple articles on the subject: http://www.thewolfeclinic.com/acidalkfood... Read More
- Posted On June 11, 2008 10:19:28 AM
  ..., but "almond milk" is on the acidifying list. Seems odd Just glancing at the two lists, I'd say i've got a pretty good balance, I guess. I am eating low carb (so no acidifying pas... Read More
What is the problem with sodium?
- Posted On November 10, 2007 02:43:55 PM
  ... have a lot of gastric issues including acid reflux.. haha so i have a whole slew of things going on and i'm only 19! but my gastroenterologist as well as a cardiologist i'm seeing both told me ... Read More
- Posted On November 10, 2007 02:50:16 PM
  ... have a lot of gastric issues including acid reflux.. haha so i have a whole slew of things going on and i'm only 19! but my gastroenterologist as well as a cardiologist i'm seeing both told me ... Read More
Apple Cider Vinegar
- Posted On July 24, 2007 08:22:01 AM
  ...ter. Otherwise, its too strong and the acid can damage your tooth enamel and taste buds. And yes, its still too strongly flavored when diluted! Here's a few links to some info about the all... Read More
- Posted On July 24, 2007 08:40:01 AM
  ...el like the food was just sitting in my stomach forever and now I don't have that heavy feeling. So far I haven't had any side effects, but everyone is different. Read More
H20 info
...n't mind. DRINK WATER ON EMPTY STOMACH > > It is popular in Japan today to drink water immediately after waking up > every morning. Furthermore, scientific tests have proven its val...
- Posted On March 2, 2008 07:52:17 PM
  Very good info, thanks for sharing :) Read More
Vitamins
...olism and such. I have horrendous acid reflux that, if I am not careful, causes gastritous easily. Anyway, do any of you guys take this vitamin complex and if so, do you like it?&nbs...
- Posted On May 18, 2009 03:16:25 PM
  ... HORRIBLE acid issues also with my stomach, but thus far no issues with the B vitaminsand I have been using them a little over a year. I would hightly suggest using them. I a... Read More
- Posted On May 19, 2009 04:18:50 AM
  ...me verrrrrry low in D. There is a blood test which will show your levels. Vitamin D strongly helps prevent breast cancer. Just an FYI Read More
Prenatal Vitamin Confusion
...al AND the vitamin both have 100% folic acid! Can I still take both or am I overloading my body with folic acid? HELP!
- Posted On August 8, 2007 01:14:18 PM
  ...han 18 years of age. Supplemental folic acid should not exceed the UL to prevent folic acid from masking symptoms of vitamin B12 deficiency.[19] (So, you'll need to check the actual amounts in y... Read More
- Posted On August 8, 2007 02:01:27 PM
  ...oing to wait until I miss my period and test then. I didn't realize that we were in the same boat right now. Cool! Good Luck to you :) Read More
i think i broke something
my whole body is so sore and burninating from yesterday's workout. today i did 60 min taebo kickboxing and could barely lift my arms or squat.
- Posted On September 8, 2008 06:24:32 PM
  ...e diet is efficiently absorbed from the stomach and enters the blood via the major vein draining the digestive system that empties into the liver. Much of it bypasses uptake in the liver and is ... Read More
- Posted On September 8, 2008 06:24:32 PM
  ...e diet is efficiently absorbed from the stomach and enters the blood via the major vein draining the digestive system that empties into the liver. Much of it bypasses uptake in the liver and is ... Read More
FRIDAY and it's time to PARTY!!!!
glitter-graphics.com
- Posted On May 30, 2008 04:01:01 AM
  ...we said best of luck with the placement tests. She will do great..we know it! As far as turning blue, oh what the hell..blue is a nice color! LOL Read More
- Posted On May 30, 2008 06:17:46 AM
  ...its" lol I hope she does well and the tests will be good. Charlotte, good luck with your placement test too! I am sure if she is like her "mum" she will do great! Amy, I watch LOST too. I ... Read More
Health update
...rregular appearing, granular and grainy stomach lining. There was no internal bleeding, which is good, but what could be up with this lining? I do not have heart burn at this time.&n...
- Posted On May 26, 2009 04:44:47 PM
  .... I know how it feels to have horrible stomach pains and not know where it's coming from. From gall stones to ulcers on the outside of my stomach. Now I have acid reflux desease and am... Read More
- Posted On May 26, 2009 05:30:07 PM
  Wow! Theresa! That's a lot of tests, information, and pain. For all that, you would think there would be a lot of answers, too, eh? I'm sorry that it is so hard right now. I am prayi... Read More
Always the one to o completely off topic
Has anyone here every had a problem with their gall bladder??? What does it feel like to get an attack? i think i might be getting those. i went to the er last monday with chest pains, nausia, i...
- Posted On February 17, 2008 06:59:06 AM
  ...few years ago. They feel like a severe stomach cramp but a little higher, just below the rib cage. They also radiate into your back. I had my gall bladder removed shortly after. My doctor sa... Read More
- Posted On February 17, 2008 07:05:52 AM
  I agree, and the ultrasound is the fastest and easiest way to find out for sure. Sometimes doctors don't like it when you tell them what you think is wrong. But it is your body you know it best. Do... Read More
Waste Product: Whey Protein!?!?
I've been testing out various protein powders: looking for low sugar, low carb, no soy, no iodine, high protein. It's harder that one would think! Just this morning, I had convinced myself that w...
- Posted On August 12, 2008 06:11:54 AM
  ...ts, they are CRAP - causing break outs, stomach upset and digestive upset. Let me research this more and get back to you. Thanks for bringing this subject up :) Hugs ~ Judith Read More
- Posted On August 12, 2008 10:47:32 AM
  ...ing athletes generally are not the brightest individuals." That comment in and of itself I find offensive! I am an athlete and am quite bright, Mackenzie is an athlete and has her MBA . . . ... Read More
Super Supplements

... indicate it may prevent esophageal and stomach cancers. Dose: It isn't easy to select a garlic remedy. Some don't have enough allicin, the active ingredient, and others contain allicin of ...
Guinea pig Grammy
...t also advises eating fruit on an empty stomach not during or after meals, rather before meals and as snacks and NEVER cooked. I do not advise this for anyone else. I respect my sister - law'...
- Posted On March 4, 2008 09:04:46 AM
  Dear Grammy, with such severe acid reflux; perhaps you might do well to forget about coffee. There are coffee substitutes that are low acid and without caffeine. Also, hope you are checking with yo... Read More
- Posted On March 4, 2008 09:04:46 AM
  Dear Grammy, with such severe acid reflux; perhaps you might do well to forget about coffee. There are coffee substitutes that are low acid and without caffeine. Also, hope you are checking with yo... Read More

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Stomach Acid Test

What is Stomach Acid Test?

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What is Stomach Acid Test?

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