Children's Hospital of Philadelphia Test Directory

Collect

For the University City campus, collect in a light-green plasma separator tube (preferred):

For all other satellite locations:

Gold Top Tube
(Serum Separator Tube)

Microtainer Gold Top
(Serum Separator Tube)

Specimen Preparation

Follow Central Lab Services processing protocol.

Storage/Transport Temperature

Room temperature

Stability (from collection to initiation)

Before separation from cells		After separation from cells
Room Temperature	≤ 2 days	Room Temperature	≤ 4 days
		Refrigerated (2-8 C)	≤ 1 week
		Frozen (-20 C)	≤ 6 months

Volume Required

0.5 mL blood

Minimum Required

0.2 mL blood

Phlebotomy Draw

Yes

Performing Lab

Chemistry Laboratory

Performed

24/7

Methodology

Direct potentiometry

Reported

STAT: 60 minutes
Routine: 90 minutes

LIS Mnemonic

Available STAT

Yes

Reference Ranges

Age	Range
0D-11Mos	133-140 mmol/L
1-9 Yrs	138-145 mmol/L
10-20 Yrs	136-145 mmol/L
>= 21 Yrs	137-145 mmol/L

CPT Codes

84295

Collection

Collect

For the University City campus, collect in a light-green plasma separator tube (preferred):

For all other satellite locations:

Gold Top Tube
(Serum Separator Tube)

Specimen Preparation

Follow Central Lab Services processing protocol.

Storage/Transport Temperature

Room temperature

Stability (from collection to initiation)

Before separation from cells		After separation from cells
Room Temperature	≤ 2 days	Room Temperature	≤ 4 days
		Refrigerated (2-8 C)	≤ 1 week
		Frozen (-20 C)	≤ 6 months

Volume Required

0.5 mL blood

Minimum Required

0.2 mL blood

Phlebotomy Draw

Yes

Ordering

Performing Lab

Chemistry Laboratory

Performed

24/7

Methodology

Direct potentiometry

Reported

STAT: 60 minutes
Routine: 90 minutes

LIS Mnemonic

Available STAT

Yes

Result Interpretation

Reference Ranges

Age	Range
0D-11Mos	133-140 mmol/L
1-9 Yrs	138-145 mmol/L
10-20 Yrs	136-145 mmol/L
>= 21 Yrs	137-145 mmol/L

Administrative

CPT Codes

84295

Collect

Specimen Preparation

Storage/Transport Temperature

Stability (from collection to initiation)

Volume Required

Minimum Required

Phlebotomy Draw

Performing Lab

Performed

Methodology

Reported

LIS Mnemonic

Available STAT

Reference Ranges

CPT Codes

Collect

Specimen Preparation

Storage/Transport Temperature

Stability (from collection to initiation)

Volume Required

Minimum Required

Phlebotomy Draw

Performing Lab

Performed

Methodology

Reported

LIS Mnemonic

Available STAT

Reference Ranges

CPT Codes

Print Options

Containers / Tabs

Processing...