Did You Know? One serving of a medium avocado (half the fruit) has more potassium than a medium banana, 487 mg potassium versus 422 mg potassium, respectively.
Avocados
Avocados are packed with healthy fats, vitamin K, and folate. Half an avocado without the skin and seed (68 grams) contains 345 mg of potassium, or 7% of the DV. If you eat a whole avocado, you'll get almost 15% of the DV at once ( 5 ).
Avocados are rich in potassium. One avocado actually has three times as much potassium as one banana.
A healthy adult should aim to consume 3,500–4,700 mg daily from foods. To increase your intake, incorporate a few potassium-rich foods into your diet such as spinach, yams, avocados, bananas, and fish, such as salmon.
How much potassium is in an egg? One large egg contains about 63 mg of potassium. 1 Eggs are considered a low-potassium food, but check with your doctor or dietitian to find out how often you should eat them.
Vomiting, diarrhea or both also can result in excessive potassium loss from the digestive tract. Occasionally, low potassium is caused by not getting enough potassium in your diet. In most cases, low potassium is found by a blood test that is done because of an illness, or because you are taking diuretics.
Low-potassium fruits:
Apples (plus apple juice and applesauce) Blackberries. Blueberries. Cranberries.
Bananas, oranges, cantaloupe, honeydew, apricots, grapefruit (some dried fruits, such as prunes, raisins, and dates, are also high in potassium) Cooked spinach. Cooked broccoli. Potatoes.
Adults should consume about 3,500mg of potassium per day, according to the UK's National Health Service. The average banana, weighing 125g, contains 450mg of potassium, meaning a healthy person can consume at least seven-and-half bananas before reaching the recommended level.
Nuts with the Most Potassium
All nuts contain some potassium, but pistachios have the most. If you eat a 1-ounce serving of pistachios, you'll get 291 milligrams of potassium, according to the University of Michigan Health System website.
Potassium in Watermelon
While bananas might be the first fruit to come to mind, watermelon actually reigns supreme when it comes to potassium. In just 2 wedges, or about 1/8th of a melon, you'll get 640 mg of potassium, or about 14% DV.
Some of the best sources of potassium are dark leafy greens such as spinach, which when cooked has an astounding 1,180 mg per cup, per USDA data. Swiss chard is a close second, with almost 1,000 mg per cooked cup, and even bok choy has around 445 mg per cup when cooked.
In fact, potatoes rank highest for potassium content among the top 20 most frequently consumed raw vegetables and the top 20 most frequently consumed raw fruits. One medium potato (5.3 ounces) with the skin contains 620 mg of potassium. That's 15% of your daily requirement and more than a banana.
You want to avoid high-potassium surf such as halibut, tuna, cod, and snapper. 3-oz servings can contain as much as 480 mg of potassium. On the low end, the same amount of canned tuna has only 200 mg. Salmon, haddock, swordfish, and perch run about 300 mg per 3-oz serving.
Broccoli is a medium potassium food, low in sodium and phosphorus, and suitable for all the following kidney conditions and treatments: Chronic Kidney Disease (CKD) Transplant.
Dairy and dairy products are also known to be a source of potassium. While not considered a high potassium food, the potassium in cheese should absolutely be made aware. On average, one ounce of cheese will provide about 35 milligrams of potassium.
There are limited or no options for at-home kits to test potassium levels. If you are prescribed a 24-hour urine test, you will need to collect your urine wherever you are during the day, including at home. However, this testing is still prescribed by your doctor rather than sold as a separate at-home test kit.
Nuts, seeds, and legumes
These foods have a low level of potassium (less than 200 mg potassium per serving on average).
A ½ cup serving of blueberries has less than 150 milligrams potassium making them a low potassium fruit choice. Blueberries are also low in sodium and phosphorus making them suitable for a kidney friendly diet. They are safe to eat for all of the following kidney conditions and treatments: CKD/Transplant.
Caffeine and tobacco reduce the absorption of potassium. People at risk for insufficient potassium intake include alcoholics, drug addicts and crash dieters.