Investigations

Paracetamol, Blood (Acetaminophen) Parathormone, Serum (Parathyroid Hormone) Parietal Cell Antibodies, Serum (Gastric Cell Antibodies, Serum) Paul Bunnell Test Peak Expiratory Flow Rate Pemphigoid Autoantibodies, Serum pH, Serum pH, Urine Phenobarbitone, Serum Phenytoin Sodium, Serum Phosphate Threshold, Urine Phosphate, Serum Phosphate, Urine Phosphorus, Inorganic, Serum (P) Placental Lactogen, Human, Serum Platelet Count, Blood Porphyrins, Blood Porphyrins, Faeces Porphyrins, Urine Potassium, Serum [K] Potassium, Urine [K] Progesterone, Serum Prolactin, Plasma Prostate Specific Antigen, Serum [PSA] Protein C, Plasma Protein S, Plasma Protein, CSF Protein, Serum, Total Protein, Urine Prothrombin Index [PI] Prothrombin Ratio (International Normalised Ratio – Prothrombin) [INR] Prothrombin Time [PT] PT PTT Platelet count Pyruvate Kinase, Serum Pyruvate, Blood Quinidine, Serum Radioallergosorbent Test, Serum [RAST] Red Blood Cell Fragility, Osmotic, Blood Red Blood Cell Mass, Blood Reticulocytes, Blood Rheumatoid Factor, Serum (Rose Waller Test) (Rheumatoid Titre) [RF] RPR, Serum [Rapid Plasma Reagin Test] [VDRL] Rubella Antibodies, Serum S Acetone S Acid Phosphatase Total Salicylates, Serum Schilling Test Seminal Analysis