Biochemistry Phone Limits
The phoning limits for biochemistry tests are as follows:
| Below | Above | Units | Notes | |
| Sodium | 120 | 150 | mmol/L | |
| Potassium | 3 | 6.5 | mmol/L | |
| Urea | 30 | mmol/L | ||
| Creatinine | 500 | umol/L | ||
| Glucose | 2.5 | 20 | mmol/L | Heartlands will phone Antenatal > 11 mmol/L |
| Calcium adjusted | 1.8 | 3.5 | mmol/L | |
| Magnesium | 0.4 | mmol/L | ||
| Phosphate | 0.3 | mmol/L | ||
| AST | 700 | U/L | ||
| ALT | 400 | U/L | ||
| Total CK | 500 | U/L | ||
| Amylase | 600 | U/L | ||
| TBA | 20 | umol/L | ||
| Iron | 70 | umol/L | ||
| Total bilirubin | 225 | umol/L | Or increase > 85 umol/L in 24 h | |
| Carbamazepine | 25 | ug /mL | ||
| Digoxin | 2.5 | ng/mL | ||
| Theophylline | 45 | ug/mL | ||
| Phenytoin | 20 | ug/mL | ||
| Phenobarbitone | 70 | ug/mL | ||
| Lithium | <0.2 | >1.5 | mmol/L | |
| Valproate | 100 | mg/L | ||
| Cyclosporin A | 200 | ug/L | ||
| CRP | mg/L | CRP >300 mg/L phoned with other abnormal results | ||
| Salicylate | 20 | mg/L | ||
| Paracetamol | 10 | mg/L | ||
| Ammonia | All phoned | |||
| Lactate | All phoned | |||
| beta-HCG | All EPAU & A&E phoned | |||
| progesterone | All EPAU & A&E phoned | |||
| CSF glucose | All phoned | |||
| CSF protein | All phoned | |||
| NNU results | All phoned |
Tags: biochemistry blood sciences