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Critical Results

The list below shows the established list of tests and their critical values. All critical test results will be communicated to the requesting physicians via the telephone number provided in the request. This communication will be recorded and documented in the laboratory test report and laboratory information system.

List of Critical Results

List  of Critical results extracted from P&P 63110-LM8012 Reporting of Critical Values

Also the latest revision is 25 Aug 2021


Tests


Low


High


Units

 

 

Clinical Chemistry

 

 

 

 

Ammonia, plasma (<1 month old)

 

>120

µmol/L

 

Ammonia, plasma ( > 1 month old)

 

>100

µmol/L

 

ß-Hydroxybutyrate, blood

 

>1.5

mmol/L

 

Bilirubin, total, serum

 

> 300

µmol/L

 

Calcium, serum

< 1.6

> 3.2

mmol/L

 

Adjusted Calcium, serum

< 1.6

> 3.2

mmol/L

 

Calcium, ionized, blood

< 0.8

> 1.6

mmol/L

 

Chloride, serum

< 85

> 120

mmol/L

 

Creatine Kinase

-

>10000

U/L

 

Glucose, serum and plasma (>1 year old)

< 2.5

>20.0

mmol/L

 

Glucose, serum and plasma (<1 years old)

<2.5

> 16.0

mmol/L

 

Glucose, Cerebrospinal fluid (< 6 months)

<2.0

 

mmol/L

 

Glucose, Cerebrospinal fluid (>= 6 months)

<2.4

 

mmol/L

 

Lactate, plasma

 

> 4.0

mmol/L

 

Magnesium, serum

< 0.5

> 2.0

mmol/L

 

Magnesium, serum (under magnesium therapy)

< 0.5

> 4.0

mmol/L

 

Osmolality, serum

< 200

> 350

mOsm/kg

 

pCO2, blood

< 20

> 50

mmHg

 

pH, blood

< 7.2

> 7.6

 

 

pO2, blood

< 40

> 150

mmHg

 

Potassium, serum (0 to 1 month old)

< 2.5

> 7.0

mmol/L

 

Potassium, serum (> 1 month old)

< 2.5

> 6.0

mmol/L

 

Sodium, serum

< 125

> 155

mmol/L

 

WBC count, Cerebrospinal fluid (< 1 month)

 

> 20

per µL

 

WBC count, Cerebrospinal fluid (1 to < 2 months)

 

>10

per µL

 

WBC count, Cerebrospinal fluid (>= 2 months)

 

>5

per µL

 

Drugs

 

 

 

 

Amikacin ( trough, peak, random), serum

 

> 38.0

mg/L

 

Gentamicin (peak), serum

 

> 12.0

mg/L

 

Gentamicin (trough), serum

 

> 3.0

mg/L

 

Paracetamol, serum

 

>5.0

mg/L

 

Valproic acid, serum

 

> 120

mg/L

 

Vancomycin (trough, peak), serum

 

>80.0

mg/L

 

Special Chemistry

 

 

 

Free T4, serum (aged 2 months and below only)

<5.2

 

pmol/L

 

Thyroid-Stimulating Hormone, serum

 

>30.00

mlU/L

 

Thyroid-Stimulating Hormone, cord blood

 

>30.00

mlU/L

 

Haematology

Parameters

Patient Group

Notification Criteria

Hb (g/dL)

Chronic Transfusion Cases

≤ 7.0

All Other Cases

≤ 8.0

HCT (%)

Neonatal Cases Only

≥ 65.0

WBC (x109 /L)

All Cases

≤ 1.0

≥ 50.0

Platelets (x109 /L)

≤ 20

≥ 1000

ANC (x109 /L)

CE Cases only

≤ 0.1

All Cases (except CE cases)

≤ 1.0

I / T Ratio

Neonatal Cases Only

≥ 0.25

Blast

All Cases

Present

MP

Present

Kleihauer-Betke Test

Present

CSF for Blast

Present

PT (secs)

≥ 20.0

INR

≥ 5.0

APTT (secs)

Neonatal Cases Only

≥ 70.0

APTT (secs)

All Other Cases

≥ 60.0

Fibrinogen (g/L)

All Cases

≤ 0.40

Anti Xa (LMWH) (IU/ml)

≥ 2.0

Anti Xa (UFH) (IU/ml)

≥ 1.1

Dengue Serology

NS1 Antigen / IgM and/or IgG positive

 

Microbiology

Notification Criteria

Blood

Positive Gram-stain

Cerebrospinal fluid

Positive Gram-stain