Brigham & Women's Hospital Clinical Pathology & Laboratories

BWH: Chemistry Alert Values

Alert values either greater than or less than the ranges indicated below will be called directly to the ordering location or practice site. For more information see the guidelines for notification of alert values.
Test
Less Than
Greater Than
Test
Less Than 
Greater Than
Acetaminophen
-
50
 Hepatitis B Antigen (HBAG)
-
All positive results
Alcohol (ALC)
-
400
 Hepatitis C Antibody (HCV)
-
All positive results
Alpha Fetoprotein-tumor
-
15
 Lidocaine
-
6.0
ALT (GPT)
-
2000
 Lithium
-
1.8
AMylase
-
2000
 Magnesium (MG)
1.0
7.0
AST (GOT)
-
2000
 NAPA
-
25.0
Bicarbonate (CO2)
12
36
 pH
7.20
7.60
Bilirubin (neonate)
-
18.0
 Phenobarbital (PHENO)
-
40.0
BUN
-
120
 PCO2
-
60.0
Calcium (CA)
6.5 
Neonatal: 6.5
13.0 
Neonatal: 12.0
 PO2
40 (arterial)
-
Calcium (ionized)
0.8
1.6
 Potassium (K)
2.5
Neonatal: 2.5
6.0
Neonatal: 7.0
Carbamazepine (CARB)
-
15.0
 Primodone (PRIM)
-
25.0
Carboxyhemoglobin
-
5%
 Procainamide (PA)
-
15.0
Chloride (CL)
70
140
 Protein (CSF)
-
200
CK-Isoenzymes
-
positive MB
 Quinidine (QUIN)
-
8.0
Cyclosporin (CYCA)
-
800
 Salicylate (SAL)
-
30.0
Digoxin (DIG)
-
2.5
 Sodium (Na)
115
Neonatal: 125
160
Neonatal: 150
Dilantin (DIL)
-
30.0
 Theophylline (THEO)
-
25.0
Glucose (GLU)
40
400 
Neonatal: 150
Obstetric: 200
 Troponin-I
-
1.5
Glucose (CSF)
20
-
 Vancoumycin (VANCO)
-
60.0
Vitamin B12
100
-