Well, I have taken the NCLEX three times and all three times I saw the same basic lab values (I wrote down the ranges from the Saunders book). Here the are:
Sodium: 135-145 mEq/L
BUN: 5-20 mg/dL
Serum Creatinine: 0.6-1.3
Magnesium: 1.6-2.6 mg/dL
SED Rate: 0-30 mm/hr
Total Bili: <1.5 mg/dL
Also, don't forget to know the normal ranges for ABGs and now what is what during metabolic and respirtatory acidosis and alkalosis!
pCO2: 35-45 mmHg
HCO3: 22-27 mEq/L
I was also once asked about Lithium levels, so here is the information I pulled from the Saunders book about that.
0.8-1.2 mEq - therapeutic level
0.6-1.4 mEq - maintenance dose
1.0-1.5 mEq - during acute mania
> or equal to 3.5 mEq - toxic level = SEIZURE!
Hope this helps anyone who needs it. All information and values were taken DIRECTLY from the Saunders Q&A Book.