Discuss it with your doctor but given the fact you had bypass two weeks ago, the results are probably what your doctor expects. Anytime a patient goes on a high protein, very low carb diet, this can and does happen. For example, Lindora weight loss centers use ketone sticks to make sure you are in ketosis which is what they use to judge how well you are sticking with their diet.
A negative test result is normal. When ketones are present in the urine, the results are usually listed as small, moderate, or large with these corresponding values:
Small: < 20 mg/dL
Moderate: 30 - 40 mg/dL
Large: > 80 mg/dL
Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
A positive test may indicate:
- Abnormal nutritional conditions
- High protein or low carbohydrate diets
- Disorders of increased metabolism
- Acute or severe illness
- Nursing a baby (lactation)
- Post-surgical condition
- Metabolic abnormalities, including uncontrolled diabetes or glycogen storage disease
- Vomiting frequently over a long period of time