Laboratory values in the critical range will be reported by telephone immediately.
On inpatients, the laboratory will attempt to phone the physician first; however, if the physician listed as the ordering physician is incorrect or does not respond within 10 minutes, the patient’s nurse will be notified.
Results will be reported only to a physician or nurse unless the location of the patient is in the recovery room, operating room, or labor and delivery and a physician or nurse cannot come to the phone.
Critical value laboratory test results will be phoned immediately to non-UC Irvine Pathology Referral Services clients. These results can be released to a clinical laboratory scientist at the referral client location when the ordering physician is unavailable.
The urgency of the contact will be emphasized to the individual accepting the phoned report, as well as the importance of contacting the appropriate physician.
Inability to contact the requesting physician, clinic, or office after two attempts will be followed up with an attempt to reach the pathology resident on call, the clinical pathology attending on call, or the director of the specific laboratory section in which the laboratory results occurred.
| Test | Critical Low Value | Critical High Value |
| Albumin | <2.0 g/dL | ----- |
| ALT (SGPT) | >100 IU/L | |
| Ammonia | >100 mcmol/L | |
| Ammonia Nitrogen (arterial) | ----- | >150 ug/dL |
| Bicarbonate | <14 mmol/L | >35 mmol/L |
| Bilirubin, direct | ----- | >1.5 mg/dL |
| Bilirubin, micro: | 1 day: >6 mg/dL 2 days:>10 mg/dL 5 days-12 mos: >15 mg/dL |
|
| Bilirubin, Total | ----- | >15 mg/dL |
| Blood culture | ----- | Positive |
| Calcium, plasma | <6.5 mg/dL | >12 mg/dL |
| Calcium, ionized |
Birth to 1 month: |
>1 month to ≤12 months: >1.5 mmol/L |
| Carbon Dioxide (CO2) | <12 mEq/L | ----- |
| Chloride | <80 mEq/L | >117 mEq/L |
| COVID-19 (SARS-CoV-2) | ----- | Detected |
| Creatinine | ----- | >2.0 mg/dL |
| Creatine phosphokinase (CK) | ----- | >1,200 U/L |
| CSF, culture or Gram stain | ----- | Positive |
| ESR (Ophthalmology) TOPHT, TEYES, ZOPHT | ----- | >10 mm/hr |
| Fibrinogen | <100mg/dL | ----- |
| Gamma-Glutamyl Trans (GGT): | ----- | >300 U/L |
| Glucose (Blood) | <45 mg/dL | >250 mg/dL |
| Hemoglobin | <7.0 gm/dL | >22.0 gm/dL |
| Hematocrit | <21% | >65% |
| Lactate dehydrogenase (LDH) | ----- | >3,000 U/L |
| Lactic acid, plasma: | >3.0 mmol/L | |
| Lead | ----- | ≥3.5 mcg/dL |
| Low Molecular Weight Heparin (LMWH) | ----- | ≥2.0 IU/mL |
| Magnesium (blood) | <1.2 mg/dL | >3.0 mg/dL |
| Metabolic Error Screen | ----- | any positive |
| Nucleated cells (CSF) | ----- | > 5 cells present |
| Osmolality | ----- | > 300 mOsm/L |
| Base Excess Neonates (arterial or capillary) | <-10 mEq/L | ----- |
| pH | <7.25 | >7.60 |
| pCO2 | ----- | >75 mm Hg |
| pO2 | <50 mm Hg | >100 mm Hg |
| Phosphorus | <3 mg/dL | >8 mg/dL |
| Platelet Count | ≤50,000 /mm3 | >1,000,000 /mm3 |
| Prothrombin Time (PT) | ----- | >4.0 INR |
| Partial Thromboplastin Time (PTT) | ----- | ≥90.0 seconds |
| Sodium | <125 mEq/dL | >150 mEq/dL |
| Unfractionated Heparin | ----- | ≥0.8 IU/mL |
| Urea Nitrogen | ----- | >60 mg/dL |
| Uric acid | ----- | >12 mg/dL |
| WBC Peripheral Blood | ≤2,000 /mm3 | ≥35,000 /mm3 |
| % Bands | ----- | >25 % |
| Therapeutic Drug Levels | ||
| Acetaminophen | ----- | >150 mcg/mL |
| Amikacin | ----- | Peak: >30.0 mcg/mL Trough: >10.0 mcg/mL |
| Carbamazepine | ----- | >15.0 mcg/mL |
| Cyclosporin | ----- | >450 ng/mL |
| Digoxin | ----- | >2.1 ng/mL |
| Dilantin | ----- | >20.0 mcg/mL |
| Gentamicin | ----- | Peak: >12.0 mcg/mL Trough: >2.0 mcg/mL |
| Lithium | ----- | >1.5 mEq/L |
| Phenobarbital | ----- | >50 mcg/mL |
| Salicylate | ----- | >30 mg/mL |
| Sirolimus | ----- |
>25 ng/mL: Liver Transplantation |
| Tacrolimus | ----- | >7.5 ng/mL |
| Theophylline | ----- | >20.0 mcg/mL |
| Tobramycin | ----- | Peak: >12.0 mcg/mL Trough: >2.0 mcg/mL |
| Valproic acid | ----- | >120 mcg/mL |
| Vancomycin | ----- | Peak: > 60.0 mcg/mL Trough: <5.0 mcg/mL or >15.0 mcg/mL |
Laboratory values in the critical range will be reported by telephone immediately.
On inpatients, the laboratory will attempt to phone the physician first; however, if the physician listed as the ordering physician is incorrect or does not respond within 10 minutes, the patient’s nurse will be notified.
Results will be reported only to a physician or nurse unless the location of the patient is in the recovery room, operating room, or labor and delivery and a physician or nurse cannot come to the phone.
Critical value laboratory test results will be phoned immediately to non-UC Irvine Pathology Referral Services clients. These results can be released to a clinical laboratory scientist at the referral client location when the ordering physician is unavailable.
The urgency of the contact will be emphasized to the individual accepting the phoned report, as well as the importance of contacting the appropriate physician.
Inability to contact the requesting physician, clinic, or office after two attempts will be followed up with an attempt to reach the pathology resident on call, the clinical pathology attending on call, or the director of the specific laboratory section in which the laboratory results occurred.
| Test | Critical Low Value | Critical High Value |
| Albumin | <2.0 g/dL | ----- |
| ALT (SGPT) | >100 IU/L | |
| Ammonia | >100 mcmol/L | |
| Ammonia Nitrogen (arterial) | ----- | >150 ug/dL |
| Bicarbonate | <14 mmol/L | >35 mmol/L |
| Bilirubin, direct | ----- | >1.5 mg/dL |
| Bilirubin, micro: | 1 day: >6 mg/dL 2 days:>10 mg/dL 5 days-12 mos: >15 mg/dL |
|
| Bilirubin, Total | ----- | >15 mg/dL |
| Blood culture | ----- | Positive |
| Calcium, plasma | <6.5 mg/dL | >12 mg/dL |
| Calcium, ionized |
Birth to 1 month: |
>1 month to ≤12 months: >1.5 mmol/L |
| Carbon Dioxide (CO2) | <12 mEq/L | ----- |
| Chloride | <80 mEq/L | >117 mEq/L |
| COVID-19 (SARS-CoV-2) | ----- | Detected |
| Creatinine | ----- | >2.0 mg/dL |
| Creatine phosphokinase (CK) | ----- | >1,200 U/L |
| CSF, culture or Gram stain | ----- | Positive |
| ESR (Ophthalmology) TOPHT, TEYES, ZOPHT | ----- | >10 mm/hr |
| Fibrinogen | <100mg/dL | ----- |
| Gamma-Glutamyl Trans (GGT): | ----- | >300 U/L |
| Glucose (Blood) | <45 mg/dL | >250 mg/dL |
| Hemoglobin | <7.0 gm/dL | >22.0 gm/dL |
| Hematocrit | <21% | >65% |
| Lactate dehydrogenase (LDH) | ----- | >3,000 U/L |
| Lactic acid, plasma: | >3.0 mmol/L | |
| Lead | ----- | ≥3.5 mcg/dL |
| Low Molecular Weight Heparin (LMWH) | ----- | ≥2.0 IU/mL |
| Magnesium (blood) | <1.2 mg/dL | >3.0 mg/dL |
| Metabolic Error Screen | ----- | any positive |
| Nucleated cells (CSF) | ----- | > 5 cells present |
| Osmolality | ----- | > 300 mOsm/L |
| Base Excess Neonates (arterial or capillary) | <-10 mEq/L | ----- |
| pH | <7.25 | >7.60 |
| pCO2 | ----- | >75 mm Hg |
| pO2 | <50 mm Hg | >100 mm Hg |
| Phosphorus | <3 mg/dL | >8 mg/dL |
| Platelet Count | ≤50,000 /mm3 | >1,000,000 /mm3 |
| Prothrombin Time (PT) | ----- | >4.0 INR |
| Partial Thromboplastin Time (PTT) | ----- | ≥90.0 seconds |
| Sodium | <125 mEq/dL | >150 mEq/dL |
| Unfractionated Heparin | ----- | ≥0.8 IU/mL |
| Urea Nitrogen | ----- | >60 mg/dL |
| Uric acid | ----- | >12 mg/dL |
| WBC Peripheral Blood | ≤2,000 /mm3 | ≥35,000 /mm3 |
| % Bands | ----- | >25 % |
| Therapeutic Drug Levels | ||
| Acetaminophen | ----- | >150 mcg/mL |
| Amikacin | ----- | Peak: >30.0 mcg/mL Trough: >10.0 mcg/mL |
| Carbamazepine | ----- | >15.0 mcg/mL |
| Cyclosporin | ----- | >450 ng/mL |
| Digoxin | ----- | >2.1 ng/mL |
| Dilantin | ----- | >20.0 mcg/mL |
| Gentamicin | ----- | Peak: >12.0 mcg/mL Trough: >2.0 mcg/mL |
| Lithium | ----- | >1.5 mEq/L |
| Phenobarbital | ----- | >50 mcg/mL |
| Salicylate | ----- | >30 mg/mL |
| Sirolimus | ----- |
>25 ng/mL: Liver Transplantation |
| Tacrolimus | ----- | >7.5 ng/mL |
| Theophylline | ----- | >20.0 mcg/mL |
| Tobramycin | ----- | Peak: >12.0 mcg/mL Trough: >2.0 mcg/mL |
| Valproic acid | ----- | >120 mcg/mL |
| Vancomycin | ----- | Peak: > 60.0 mcg/mL Trough: <5.0 mcg/mL or >15.0 mcg/mL |
| Collection |
| Test Info |
Laboratory values in the critical range will be reported by telephone immediately.
On inpatients, the laboratory will attempt to phone the physician first; however, if the physician listed as the ordering physician is incorrect or does not respond within 10 minutes, the patient’s nurse will be notified.
Results will be reported only to a physician or nurse unless the location of the patient is in the recovery room, operating room, or labor and delivery and a physician or nurse cannot come to the phone.
Critical value laboratory test results will be phoned immediately to non-UC Irvine Pathology Referral Services clients. These results can be released to a clinical laboratory scientist at the referral client location when the ordering physician is unavailable.
The urgency of the contact will be emphasized to the individual accepting the phoned report, as well as the importance of contacting the appropriate physician.
Inability to contact the requesting physician, clinic, or office after two attempts will be followed up with an attempt to reach the pathology resident on call, the clinical pathology attending on call, or the director of the specific laboratory section in which the laboratory results occurred.
| Test | Critical Low Value | Critical High Value |
| Albumin | <2.0 g/dL | ----- |
| ALT (SGPT) | >100 IU/L | |
| Ammonia | >100 mcmol/L | |
| Ammonia Nitrogen (arterial) | ----- | >150 ug/dL |
| Bicarbonate | <14 mmol/L | >35 mmol/L |
| Bilirubin, direct | ----- | >1.5 mg/dL |
| Bilirubin, micro: | 1 day: >6 mg/dL 2 days:>10 mg/dL 5 days-12 mos: >15 mg/dL |
|
| Bilirubin, Total | ----- | >15 mg/dL |
| Blood culture | ----- | Positive |
| Calcium, plasma | <6.5 mg/dL | >12 mg/dL |
| Calcium, ionized |
Birth to 1 month: |
>1 month to ≤12 months: >1.5 mmol/L |
| Carbon Dioxide (CO2) | <12 mEq/L | ----- |
| Chloride | <80 mEq/L | >117 mEq/L |
| COVID-19 (SARS-CoV-2) | ----- | Detected |
| Creatinine | ----- | >2.0 mg/dL |
| Creatine phosphokinase (CK) | ----- | >1,200 U/L |
| CSF, culture or Gram stain | ----- | Positive |
| ESR (Ophthalmology) TOPHT, TEYES, ZOPHT | ----- | >10 mm/hr |
| Fibrinogen | <100mg/dL | ----- |
| Gamma-Glutamyl Trans (GGT): | ----- | >300 U/L |
| Glucose (Blood) | <45 mg/dL | >250 mg/dL |
| Hemoglobin | <7.0 gm/dL | >22.0 gm/dL |
| Hematocrit | <21% | >65% |
| Lactate dehydrogenase (LDH) | ----- | >3,000 U/L |
| Lactic acid, plasma: | >3.0 mmol/L | |
| Lead | ----- | ≥3.5 mcg/dL |
| Low Molecular Weight Heparin (LMWH) | ----- | ≥2.0 IU/mL |
| Magnesium (blood) | <1.2 mg/dL | >3.0 mg/dL |
| Metabolic Error Screen | ----- | any positive |
| Nucleated cells (CSF) | ----- | > 5 cells present |
| Osmolality | ----- | > 300 mOsm/L |
| Base Excess Neonates (arterial or capillary) | <-10 mEq/L | ----- |
| pH | <7.25 | >7.60 |
| pCO2 | ----- | >75 mm Hg |
| pO2 | <50 mm Hg | >100 mm Hg |
| Phosphorus | <3 mg/dL | >8 mg/dL |
| Platelet Count | ≤50,000 /mm3 | >1,000,000 /mm3 |
| Prothrombin Time (PT) | ----- | >4.0 INR |
| Partial Thromboplastin Time (PTT) | ----- | ≥90.0 seconds |
| Sodium | <125 mEq/dL | >150 mEq/dL |
| Unfractionated Heparin | ----- | ≥0.8 IU/mL |
| Urea Nitrogen | ----- | >60 mg/dL |
| Uric acid | ----- | >12 mg/dL |
| WBC Peripheral Blood | ≤2,000 /mm3 | ≥35,000 /mm3 |
| % Bands | ----- | >25 % |
| Therapeutic Drug Levels | ||
| Acetaminophen | ----- | >150 mcg/mL |
| Amikacin | ----- | Peak: >30.0 mcg/mL Trough: >10.0 mcg/mL |
| Carbamazepine | ----- | >15.0 mcg/mL |
| Cyclosporin | ----- | >450 ng/mL |
| Digoxin | ----- | >2.1 ng/mL |
| Dilantin | ----- | >20.0 mcg/mL |
| Gentamicin | ----- | Peak: >12.0 mcg/mL Trough: >2.0 mcg/mL |
| Lithium | ----- | >1.5 mEq/L |
| Phenobarbital | ----- | >50 mcg/mL |
| Salicylate | ----- | >30 mg/mL |
| Sirolimus | ----- |
>25 ng/mL: Liver Transplantation |
| Tacrolimus | ----- | >7.5 ng/mL |
| Theophylline | ----- | >20.0 mcg/mL |
| Tobramycin | ----- | Peak: >12.0 mcg/mL Trough: >2.0 mcg/mL |
| Valproic acid | ----- | >120 mcg/mL |
| Vancomycin | ----- | Peak: > 60.0 mcg/mL Trough: <5.0 mcg/mL or >15.0 mcg/mL |
| Result Interpretation |
Laboratory values in the critical range will be reported by telephone immediately.
On inpatients, the laboratory will attempt to phone the physician first; however, if the physician listed as the ordering physician is incorrect or does not respond within 10 minutes, the patient’s nurse will be notified.
Results will be reported only to a physician or nurse unless the location of the patient is in the recovery room, operating room, or labor and delivery and a physician or nurse cannot come to the phone.
Critical value laboratory test results will be phoned immediately to non-UC Irvine Pathology Referral Services clients. These results can be released to a clinical laboratory scientist at the referral client location when the ordering physician is unavailable.
The urgency of the contact will be emphasized to the individual accepting the phoned report, as well as the importance of contacting the appropriate physician.
Inability to contact the requesting physician, clinic, or office after two attempts will be followed up with an attempt to reach the pathology resident on call, the clinical pathology attending on call, or the director of the specific laboratory section in which the laboratory results occurred.
| Test | Critical Low Value | Critical High Value |
| Albumin | <2.0 g/dL | ----- |
| ALT (SGPT) | >100 IU/L | |
| Ammonia | >100 mcmol/L | |
| Ammonia Nitrogen (arterial) | ----- | >150 ug/dL |
| Bicarbonate | <14 mmol/L | >35 mmol/L |
| Bilirubin, direct | ----- | >1.5 mg/dL |
| Bilirubin, micro: | 1 day: >6 mg/dL 2 days:>10 mg/dL 5 days-12 mos: >15 mg/dL |
|
| Bilirubin, Total | ----- | >15 mg/dL |
| Blood culture | ----- | Positive |
| Calcium, plasma | <6.5 mg/dL | >12 mg/dL |
| Calcium, ionized |
Birth to 1 month: |
>1 month to ≤12 months: >1.5 mmol/L |
| Carbon Dioxide (CO2) | <12 mEq/L | ----- |
| Chloride | <80 mEq/L | >117 mEq/L |
| COVID-19 (SARS-CoV-2) | ----- | Detected |
| Creatinine | ----- | >2.0 mg/dL |
| Creatine phosphokinase (CK) | ----- | >1,200 U/L |
| CSF, culture or Gram stain | ----- | Positive |
| ESR (Ophthalmology) TOPHT, TEYES, ZOPHT | ----- | >10 mm/hr |
| Fibrinogen | <100mg/dL | ----- |
| Gamma-Glutamyl Trans (GGT): | ----- | >300 U/L |
| Glucose (Blood) | <45 mg/dL | >250 mg/dL |
| Hemoglobin | <7.0 gm/dL | >22.0 gm/dL |
| Hematocrit | <21% | >65% |
| Lactate dehydrogenase (LDH) | ----- | >3,000 U/L |
| Lactic acid, plasma: | >3.0 mmol/L | |
| Lead | ----- | ≥3.5 mcg/dL |
| Low Molecular Weight Heparin (LMWH) | ----- | ≥2.0 IU/mL |
| Magnesium (blood) | <1.2 mg/dL | >3.0 mg/dL |
| Metabolic Error Screen | ----- | any positive |
| Nucleated cells (CSF) | ----- | > 5 cells present |
| Osmolality | ----- | > 300 mOsm/L |
| Base Excess Neonates (arterial or capillary) | <-10 mEq/L | ----- |
| pH | <7.25 | >7.60 |
| pCO2 | ----- | >75 mm Hg |
| pO2 | <50 mm Hg | >100 mm Hg |
| Phosphorus | <3 mg/dL | >8 mg/dL |
| Platelet Count | ≤50,000 /mm3 | >1,000,000 /mm3 |
| Prothrombin Time (PT) | ----- | >4.0 INR |
| Partial Thromboplastin Time (PTT) | ----- | ≥90.0 seconds |
| Sodium | <125 mEq/dL | >150 mEq/dL |
| Unfractionated Heparin | ----- | ≥0.8 IU/mL |
| Urea Nitrogen | ----- | >60 mg/dL |
| Uric acid | ----- | >12 mg/dL |
| WBC Peripheral Blood | ≤2,000 /mm3 | ≥35,000 /mm3 |
| % Bands | ----- | >25 % |
| Therapeutic Drug Levels | ||
| Acetaminophen | ----- | >150 mcg/mL |
| Amikacin | ----- | Peak: >30.0 mcg/mL Trough: >10.0 mcg/mL |
| Carbamazepine | ----- | >15.0 mcg/mL |
| Cyclosporin | ----- | >450 ng/mL |
| Digoxin | ----- | >2.1 ng/mL |
| Dilantin | ----- | >20.0 mcg/mL |
| Gentamicin | ----- | Peak: >12.0 mcg/mL Trough: >2.0 mcg/mL |
| Lithium | ----- | >1.5 mEq/L |
| Phenobarbital | ----- | >50 mcg/mL |
| Salicylate | ----- | >30 mg/mL |
| Sirolimus | ----- |
>25 ng/mL: Liver Transplantation |
| Tacrolimus | ----- | >7.5 ng/mL |
| Theophylline | ----- | >20.0 mcg/mL |
| Tobramycin | ----- | Peak: >12.0 mcg/mL Trough: >2.0 mcg/mL |
| Valproic acid | ----- | >120 mcg/mL |
| Vancomycin | ----- | Peak: > 60.0 mcg/mL Trough: <5.0 mcg/mL or >15.0 mcg/mL |
| NICU/Pediatric Info |
