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Items starting with P

PT / INR and Partial Thromboplastin Time (PTT)

PT / INR and Partial Thromboplastin Time (PTT)

Reference Range

Prothrombin Time ratio (PT) 0.8-1.2 (10-14.0 seconds)

INR Dependent upon therapeutic requirement

PTT Ratio 0.8-1.2 (23-34 seconds)

 

 

  • Turnaround Time: 24 hours
Paracetamol

Paracetamol

Reference Range

Not Applicable - use in overdose only

  • Turnaround Time: 1 Hour (with urgent request)
Parathyroid Hormone (PTH)

Parathyroid Hormone (PTH)

Reference Range

2.7 – 11.1 pmol/L

(This reference range has been derived by assessment of literature and local data)

PTH should be interpreted in the context of calcium and albumin measurements. A PTH value inside reference limits in the presence of elevated corrected calcium values may indicate PTH excess.

 

  • Turnaround Time: 24 hours
Phenytoin

Phenytoin

Reference Range

Therapeutic range:  10.0 - 20.0 mg/L

*Minimum time for patient to reach steady state without loading or after dosage change is 7 days*

  • Turnaround Time: 24 hours
Phosphate (serum)

Phosphate (serum)

Reference Range

0.8-1.5 mmol/L

 

  • Turnaround Time: 24 hours
Phosphate (Urine)

Phosphate (Urine)

Reference Range

15-50 mmol/24hr 

  • Turnaround Time: 1 day
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