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Test Code:
090-81-0310-01

Order Name:
Caffeine (blood) **

 
Useful For:

Detection of caffeine in blood.

 
Methodology:
LC/MS/MS : Quanlitative Analysis.
 
 
 
Test Code:
090-81-0310-01

Order Name:
Caffeine (blood) **

 
Collection Specimen Or Container:
Blood/ Plain Blood (Red Top) 5 mL, 1 tube

 
 
Specimen Testing Type:
Serum, minimum volume 3-5 mL 
 
Sub Mission Container:
Plastic tube
 
 
 
Test Code:
090-81-0310-01

Order Name:
Caffeine (blood) **

 
Method detail:
LC/MS/MS : Quanlitative Analysis.
 
Schedule:
N/A **Send out to Toxicology, Ramathibodi
 
Turnaround Time:
Received specimen to reported within 7 days
(Exception for official holidays)
 
Performing Location:
Toxicology, Ramathibodi
Referral Lab Services, Laboratory Department 14160-2
 
 
 
Test Code:
090-81-0310-01

Order Name:
Caffeine (blood) **

 
 
Clinical Information:
Caffeine is used to treat apnea that occurs in newborn infants, the most frequent complication seen in the neonatal nursery.
Caffeine is administered orally (nasogastric tube) as a loading dose of 3 mg/kg followed by a maintenance dose of 1 mg/kg administered once every 24 to 48 hours, depending on the patient's response and the serum level.
In neonates, caffeine has a half-life that ranges from 20 to 100 hours, which is much longer than in adults (typically 4-6 hours) due to the immaturity of the neonatal liver. This requires that small doses be administered at much longer intervals than would be predicted based on adult pharmacokinetics.
The volume of distribution of caffeine is 0.6 L/kg and the drug is approximately 35% protein bound.
Toxicity observed in neonates is characterized by central nervous system and skeletal muscle stimulation and bradycardia. These symptoms are seen in adults at lower levels than in neonates, suggesting that neonates have much greater tolerance to the drug.
 
Reference Value:
Not detected.