REX-PN EXAMINATION | COMPLETE QUESTIONS
AND CORRECT DETAILED ANSWERS | 2026
UPDATE
• calcium . CORRECT ANSWER: 9-11mg/dL
• magnesium . CORRECT ANSWER: 1.5-2.5mg/dL
• phosphorus . CORRECT ANSWER: 2.5-4.5mg/dL
• specific gravity . CORRECT ANSWER: 1.010-1.030
• GFR . CORRECT ANSWER: 90-120mL/min/1.73m2
• BUN . CORRECT ANSWER: 10-20 mg/dL
• creatinine . CORRECT ANSWER: 0.6-1.2 mg/dL
• amylase . CORRECT ANSWER: 30-110u/L
• lipase . CORRECT ANSWER: 0-150u/L
• non-diabetic . CORRECT ANSWER: 4-5.6%
• pre-diabetic . CORRECT ANSWER: 5.7-6.4%
, • diabetic . CORRECT ANSWER: >6.5%
• underweight . CORRECT ANSWER: <18.5
• healthy weight . CORRECT ANSWER: 18.5-24.9
• overweight . CORRECT ANSWER: 25.0-29.9
• obesity . CORRECT ANSWER: >30.0
• pH . CORRECT ANSWER: 7.35-7.45
• PaCO2 . CORRECT ANSWER: 35-45 mmHg
• PaO2 . CORRECT ANSWER: 80-100 mmHg
• HCO3 . CORRECT ANSWER: 22-26 mEq/L
• PT . CORRECT ANSWER: 10-13 seconds
• PTT . CORRECT ANSWER: 25-35 seconds
• aPTT . CORRECT ANSWER: 30-40 seconds
• INR . CORRECT ANSWER: <1 second
AND CORRECT DETAILED ANSWERS | 2026
UPDATE
• calcium . CORRECT ANSWER: 9-11mg/dL
• magnesium . CORRECT ANSWER: 1.5-2.5mg/dL
• phosphorus . CORRECT ANSWER: 2.5-4.5mg/dL
• specific gravity . CORRECT ANSWER: 1.010-1.030
• GFR . CORRECT ANSWER: 90-120mL/min/1.73m2
• BUN . CORRECT ANSWER: 10-20 mg/dL
• creatinine . CORRECT ANSWER: 0.6-1.2 mg/dL
• amylase . CORRECT ANSWER: 30-110u/L
• lipase . CORRECT ANSWER: 0-150u/L
• non-diabetic . CORRECT ANSWER: 4-5.6%
• pre-diabetic . CORRECT ANSWER: 5.7-6.4%
, • diabetic . CORRECT ANSWER: >6.5%
• underweight . CORRECT ANSWER: <18.5
• healthy weight . CORRECT ANSWER: 18.5-24.9
• overweight . CORRECT ANSWER: 25.0-29.9
• obesity . CORRECT ANSWER: >30.0
• pH . CORRECT ANSWER: 7.35-7.45
• PaCO2 . CORRECT ANSWER: 35-45 mmHg
• PaO2 . CORRECT ANSWER: 80-100 mmHg
• HCO3 . CORRECT ANSWER: 22-26 mEq/L
• PT . CORRECT ANSWER: 10-13 seconds
• PTT . CORRECT ANSWER: 25-35 seconds
• aPTT . CORRECT ANSWER: 30-40 seconds
• INR . CORRECT ANSWER: <1 second