Ionized Calcium

Test Name Ionized Calcium
Alternate Name(s)  
Laboratory Module LAB
Ordering Mnemonic CA ION      Note: WHGH and NGH please order ZZ.CA ION
Specimen Type

Whole Blood    Note: WHGH and NGH collect serum (SST)

Collection Container

Green 4.0 ml  (BCHS)

Low Draw Green 2.0 (BCHS)

Heparinized 1.0mL syringe acceptable for neonates

Container Information
Dark Green Tube (PST unacceptable) 
Note: WHGH and NGH collect Yellow (SST)
Collection Information

Tube must be at least 2/3 full to capacity or rejected.  Use low volume collection tubes (2 ml) or 0.5 mL collected in a balanced heparin syringe (butterfly attachment) for pediatrics or difficult draws.

 

Do not open tube as it is critical the vacuum not be disrupted 
Collect a separate tube for ionized calcium. BCHS only adhere a piece of tape over top of the tube

If possible do not use a tourniquet during collection

Test Schedule 24/7
Routine Turnaround Time Turnaround times are posted in DOCS/ Laboratory Turn Around Times DOCS# 9580
Stat Turnaround Time  
Reference Interval

 

Critical Values  
Lab Process Notes

BCHS : Must be tested within 30 minutes of collection

BCHS: Do not centrifuge

Please Note: Results posted are not corrected for pH 7.40 

Note: WHGH and NGH Collect in dedicated tube by venipuncture. The tube must be filled completely. Centrifuge. Do not open.

Store and ship refrigerated. Timing to testing site is not critical

Storage and Transport Transport immediately to lab
Test Referred To On-Site BGH Laboratory   Note: WHGH and NGH Off-site referral Lab 

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