Final answer:
The laboratory result that needs to be immediately reported to the healthcare provider is the potassium level of 6.2 mg/dL.
Step-by-step explanation:
The laboratory results that need to be immediately reported to the healthcare provider are the ones that indicate abnormal levels outside of the normal range. In this case, the result that needs immediate attention is the potassium level of 6.2 mg/dL. A normal level of serum potassium is 14-20 mg/100 ml, so a potassium level of 6.2 mg/dL is significantly lower than normal and may indicate a medical emergency.