Test Index - P

P3NP     test no longer available. Please monitor with FIB-4.

Pancreatic polypeptide     see gut hormones

Paraneoplastic antibodies     see neuronal antibodies

Paraproteins    see serum protein electrophoresis

Parathyroid hormone     see PTH

Parvovirus/ B19     see

 - parvovirus B19 serology

 - Gestational infections (ToRC) - diagnostic virology

 - diagnostic virology: maculopapular rash ± fever and for haematology and rheumatology,

 - virology screen for contacts of maculopapular rash, and viral load and resistance follow up.

Paroxysmal nocturnal haemoglobinuria (PNH)

Patau syndrome     see Down, Edwards and Patau syndrome screening

Paul Bunnell    see glandular fever screen

PBG    see porphobilinogen

PCP (pneumocystis pneumonia)     see sputum microbiology

PCR     see protein:creatinine ratio

Pemphigoid antibody     see skin antibody

Pemphigus antibody     see skin antibody

Pentagastrin Test    contact laboratory (Biochemistry)

PFA     see platelet function studies

Phenylalanine     see PKU monitoring

Phenytoin (Epanutin)

Phosphate (urine)     and fractional excretion of phosphate

Phospholipase A2 receptor antibody     see PLA2 receptor antibody

Phytanate    see VLCFA

PLAP (placental alkaline phosphatase)

Platelets     see FBC

Pleural fluid biochemistry (transudate vs. exudate)

Streptococcal pneumonia immunity     see vaccine immunity testing

Pneumocystis pneumonia (PCP)     see sputum microbiology

PNH     see paroxysmal nocturnal haemoglobinuria

Polycystic ovary syndrome profile     see PCOS profile

Porphobilinogen (PBG)

Post-dialysis profile (renal)    see renal post-dialysis profile

Pre-dialysis profile (renal)     see renal pre-dialysis profile

Precipitins     see avian allergens (avian precipitins), fungal allergens (fungal precipitins), aspergillus / galactomannan testing

Pregnancy test    see beta HCG

Primidone (Mysoline)     see phenobarbitone

Pristanate    see VLCFA

Procalcitonin  - test no longer available.

Procollagen I     see P1NP

Procollagen III test no longer available. Please monitor with FIB-4.

Profiles (test profiles)

for 17 hydroxyprogesterone click here

Prostate specific antigen     see PSA

Protein, serum     see total protein

Protein, CSF     see CSF protein

Protein:creatinine ratio (PCR)

Protein C     see thrombophilia screen

Protein electrophoresis    see serum protein electrophoresis

Protein S     see thrombophilia screen

Prothrombin time     see coagulation screen

Pseudocholinesterase and inhibitor study    see cholinesterase (scoline apnoea)

Pus

Pyridoxal phosphate     see vitamin B₆