P
Phenytoin
Description
Phenytoin/Dilantin
Test Code
0185
Specimen
Serum
Volume
1 mL
Minimum Volume
0.8 mL
Container/Collection
Red-top tube. Do not use a gel-barrier tube.
Storage Instructions
Room temperature
Phosphorus
Description
Phosphorus
Test Code
4100
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 mL
Container/Collection
Red-top tube or gel-barrier tube
Storage Instructions
Room temperature.
Potassium
Description
Potassium
Test Code
4132
Specimen
Red-top tube or gel-barrier tube
Volume
1 mL
Minimum Volume
0.5 mL
Container/Collection
Red-top tube or gel-barrier tube
Storage Instructions
Room temperature or refrigerated
Progesterone
Description
Progesterone
Test Code
4144
Specimen
Serum
Volume
0.8 mL
Minimum Volume
0.3 mL
Container/Collection
Red-top tube or gel-barrier tube
Storage Instructions
Room temperature
Prolactin
Description
Prolactin
Test Code
4146
Specimen
Serum
Volume
0.8 mL
Minimum Volume
0.3 mL
Container/Collection
Red-top tube or gel-barrier tube
Storage Instructions
Refrigerate
PSA
Description
Prostate-specific Antigen (PSA)
Test Code
4153
Specimen
Serum
Volume
0.8 mL
Minimum Volume
0.3 mL
Container/Collection
Red-top tube or gel-barrier tube
Storage Instructions
Room temperature.
PTH, Intact
Description
Parathyroid Hormone (PTH), Intact
Test Code
3970
Specimen
Serum
Volume
0.8 mL
Minimun Volume
0.3 mL
Container/Collection
Red-top tube or gel-barrier tube
Storage Instructions
Refrigerate
PT/INR
Description
Prothrombin Time and International Normalized Ratio (PT/INR)
Test Code
5610
Specimen
Whole Blood or Plasma
Volume
4.5 mL
Minimum Volume
90% of full draw
Container/Collection
Blue-top (sodium citrate) tube; do not open tube unless plasma is to be frozen.
PTT, Activated (aPTT)
Description
Prolonged Activated Partial Thromboplastin Time (aPTT)
Test Code
5730
Specimen
Whole blood or Plasma
Volume
5 mL
Minimum Volume
90% of full draw
Container/Collection
Blue-top (sodium citrate) tube; do not open tube unless plasma is to be frozen.