Telephone Action Limits
Clinical
Biochemistry
GENERAL AnalyteLower limit
(mmol/l)
Upper limit
(mmol/l)
Sodium<120>156
Potassium<2.6>6.1
Adjusted Calcium<1.80>2.99
Phosphate<0.30>4.0
Glucose<2.5>25.0
Magnesium<0.40>2.0
Lactate>5.0
DRUGS DrugUpper limitOptimum sampling time
Lithium> 1.5 mmol/l12 hours post dose
Digoxin> 2.5 µg/lAt least 6 hours post dose
Theophylline> 30.0 mg/lPre dose
Phenytoin> 25.0 mg/lPre dose
Valproate> 100 mg/lPre dose
Other drugs> upper limit of therapeutic range
HORMONES
Previously unknown, grossly hypo or hyperthyroid results.
Low cortisols (wrt diurnal variation).
Hyperprolactinaemia.
Any other grossly abnormal or unusual endocrine results.