The phrase "abnormal concentrations" is correct and usable in written English.
It can be used in contexts related to science, health, or any field where measurements or levels are being discussed, indicating that the concentrations deviate from what is considered normal.
Example: "The lab results indicated abnormal concentrations of lead in the water supply, raising concerns about public health."
Alternatives: "unusual levels" or "irregular concentrations".
It rates abnormal concentrations of smoke into 5 classifications according to the Ringelmann Scale of the Bureau of Mines.
Lead exposure is cumulative, Dr. Todd said, so the level can be expected to increase as a person ages, even if he or she is not exposed to abnormal concentrations from, say, lead paint.
It has been reported that diabetics' breath includes acetone with abnormal concentrations and the concentrations rise gradually with patients' blood glucose values.
In previous global crashes, abnormal concentrations of market participants began to engage in similar investment strategies portfolio insurance back in the 80s and leveraged housing loans more recently.
In the last few years, several studies have provided evidence that abnormal concentrations of Cu II), Zn II) and/or Fe III) specifically impair protein deposition and/or cause oxidative damage.
Just today, JAMA published a study examining the affects of BPA in 1455 adults ages 18-74, linking the chemical to cardiovascular disease, diabetes, and clinically abnormal concentrations of three liver enzymes.
It was concluded that other factors than a genetic determined abnormality might be operating in bladder cancer patients which could lead to an abnormal concentration of 3OHA in their urine.
Kernicterus, severe brain damage caused by an abnormal concentration of the bile pigment bilirubin in brain tissues at or shortly after birth.
An abnormal concentration [>45 mg/L permissible limit; Bureau of Indian standard (BIS) 2005] was noted in location number G129 dominated by sewage line.
Monitoring the concentration of cysteine (Cys) in living creature is of significance in disease diagnosis because abnormal concentration of cysteine are involved in a variety of diseases.
Tumor-associated antigens (TAAs) are normal proteins expressed at abnormal concentration, location or developmental stage, whereas tumor-specific antigens (TSAs) are macromolecules unique to tumors.
