A 24-year-old female client was admitted to the emergency room (ER) after being found with a decreased level of consciousness at home by her mother. On arrival at the ER a plasma glucose level was performed, and the result showed 38 mmol/L. A provisional diagnosis Diabetic Ketoacidosis (DKA) is suspected.
Which serum laboratory and diagnostic test results will the nurse expect to support this client's probable diagnosis of Diabetic Ketoacidosis?
A) Decreased plasma bicarbonate levels (HCO3)
B) Increased hemoglobin A1c(HBA1c)
C) Negative ketones in urine and plasma
D) Decreased serum osmolality